Latest / Boring Science / Jupiter Is Not What You Think _ What_s Really Hiding Beneath the Clouds

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Jupiter Is Not What You Think _ What_s Really Hiding Beneath the Clouds · Boring Science

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Speaker 1: Hello, and welcome to Boring Science to Sleep, a quiet
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place where science becomes slow, soft and easy to drift through. Tonight,
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you're going to gently explore Jupiter, not to learn everything
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about this enormous world, but simply to notice it slowly,
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calmly and from a little farther away than usual. You
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may have always imagined Jupiter as a giant ball of gas,
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wrapped in pale clouds with beautiful stripes turning quietly through
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the darkness. But there is much more beneath those clouds.
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Far below the storms, hydrogen begins to behave in unfamiliar ways.
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Deeper still, it can become a strange metallic liquid, moving
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through a world of immense pressure, and somewhere farther down,
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the centre of Jupiter may not even have the simple
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shape that scientists once imagined. But there is nothing you
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need to remember tonight. You are safe, there's nothing to do,
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and nothing you need to understand completely. If you truly
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enjoy these calm journeys through interesting facts about science, you're
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welcome to like this video and subscribe, only if it
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feels right for you. And when you're ready, let me
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know in the comments where you're listening from, and what
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time it is right now. It's always a quiet joy
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to see how many places and moments gather here together. Now,
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Dim the lights, maybe let a fan hum softly in
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the background, settle into whatever position feels comfortable, and let
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your attention become a little lighter. Tonight, you're simply going
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to drift toward Jupiter, and slowly, beneath its familiar clouds,
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you may begin to discover that Jupiter is not quite
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what you thought. You can begin by imagining that the
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night around you has become very still. Far away, beyond
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the moon, Beyond the familiar planets, there is a world
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turning slowly through the darkness. You do not need to
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travel there quickly. There is no destination you need to reach.
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You simply let yourself drift toward it. At first, Jupiter
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is only a small point of light. From Earth, it
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can look almost modest, especially when you remember how enormous
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it really is. A quiet light in the night. A
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distant planet. And yet, if you could continue moving toward it,
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slowly and gently, the little point of light would begin
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to grow. The brightness would become a pale sphere. The
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sphere would become a world. And eventually, the world would
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become so large that it would seem to fill much
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of your view. This is Jupiter, the largest planet in
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our solar system. It is so large that, if you
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could somehow hollow it out, and gently place Earth-sized spaces
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inside it, roughly a thousand Earths could fit within its
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enormous volume. You do not need to hold on to
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that number. Instead, let yourself imagine something smaller and softer.
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Imagine Earth as a single grape resting quietly in your hand. Now,
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imagine Jupiter beside it. Jupiter would be more like a basketball.
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The comparison is not perfect, of course, But it gives
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your mind somewhere to rest. A small grape. A large basketball.
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And between them, the strange realisation that both are planets.
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Both are worlds. Both are moving through the same solar system.
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Jupiter is also more massive than all the other planets
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in the solar system combined. So, even before you know
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what Jupiter is made of, you already know that there
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is an enormous amount of material gathered there. But what
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kind of material? That question has been waiting for a
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very long time. Long before spacecraft travelled through the outer
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solar system, people could already see Jupiter moving slowly across
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the night sky. Later, telescopes revealed its changing clouds and
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broad bands. And then, eventually, spacecraft came close enough to
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see it in a completely different way. In the 1970s,
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Pioneer 11 approached Jupiter and gave humanity some of its
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first close views of the enormous planet. A few years later,
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Voyager 1 came through, carrying cameras that showed Jupiter in
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much greater detail. The planet became more than a bright
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point in the sky. It became a place. A place
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with pale bands, darker belts, swirling clouds, enormous storms, and
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patterns that seemed almost impossibly large. For a moment, It
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might have seemed that seeing Jupiter clearly would finally answer
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the old questions. But something curious happened. The better we
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could see Jupiter, the more questions appeared. The clouds were beautiful,
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but they did not tell us what was beneath them.
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The storms were enormous, but they did not reveal where
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they came from. The planet looked like a giant ball
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of gas, but the word gas became less comfortable the
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more deeply scientists thought about it. Because Jupiter does not
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have a solid surface like Earth. There is no quiet
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shoreline waiting somewhere below the clouds. There is no ground
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where you could place your feet. Instead, as you drift downward,
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the surrounding material simply becomes denser and denser. The atmosphere
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slowly changes. The pressure grows. The temperature rises. And the
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familiar idea of a planet begins to soften. You might
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imagine yourself floating above Jupiter now, just beneath the distant sunlight,
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surrounded by clouds moving in long, gentle bands. Some clouds
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are bright, some are darker, some stretch for thousands of kilometres,
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and beneath them, deeper layers are waiting. The visible clouds
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are only the outermost part of a much larger world.
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They are weather, they are movement, they are the surface
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appearance of something that does not really have a simple surface.
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The great red spot turns somewhere below your field of view,
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enormous and slow. A storm larger than Earth, continuing its
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long circulation. Tiny particles of ice and droplets move through
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the atmosphere. Lightning sometimes flashes deep inside the clouds. Winds
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carry material from one region toward another. Everything is moving,
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but nothing seems hurried. And beneath all of that motion,
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Jupiter continues turning. quietly, patiently, its enormous mass holding everything together,
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its gravity reaching outward into space, while at the same
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time drawing everything within the planet farther inward. The deeper
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you imagine going, the less familiar Jupiter becomes. At first,
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you see clouds. Then you begin to imagine deeper layers.
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Then pressure. Then heat. then hydrogen behaving in ways that
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hydrogen does not behave here on Earth. And eventually, far
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below the clouds you can see, there may be a
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strange region where the centre of the planet is not
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a neat compact ball at all. But you do not
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need to go there yet. For now, you can simply
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remain above the clouds. You can watch Jupiter turning beneath you.
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You can let the pale bands move slowly across your view.
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you can remember the tiny grape that represented Earth and
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the basketball that represented Jupiter. And perhaps the most interesting
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part is that this enormous basketball-shaped world, this planet large
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enough to contain roughly a thousand Earths, is still mostly
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hidden from us. We have seen its clouds. We have
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watched its storms. We have sent spacecraft across the darkness
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to look more closely. But the deepest Jupiter has always
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been quieter, Hidden beneath layers of pressure and heat, beneath
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the clouds and the storms, something waits that may tell
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us how this enormous world was born. And to understand that,
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you have to let your thoughts drift backward, long before
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Jupiter had its familiar bands, before the great red spot
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turned beneath the sunlight, before there were spacecraft to photograph it.
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Back to a much younger solar system, when the planets
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were not yet planets at all, and Jupiter was only
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a possibility moving slowly through a cloud of dust, rock, metal,
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and gas. For a little while, you can simply rest there,
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above the clouds, while that ancient solar system begins to
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take shape somewhere far beyond the quietness of the present moment.
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Session 2. Two Ways to Build a Giant Planet Purpose
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To travel gently backward in time... and explore the two
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leading ideas for how Jupiter may have formed, without turning
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the explanation into a technical lesson. Scientific focus, the young
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solar system, the gradual gathering of rock and metal, gravity-driven growth,
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and the alternative possibility of direct gravitational collapse. Approximate length,
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950 words. Long before Jupiter became the enormous world you
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were just watching, there was no Jupiter to see. There
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were no pale bands moving across the sky, no enormous storms,
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no distant spacecraft passing through the darkness. There was only
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a young sun, surrounded by a wide, slowly turning disk
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of material. You can imagine it as a vast, quiet
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construction site, although there were no machines, no walls, and
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no hands guiding anything. There was dust, tiny pieces of rock,
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small amounts of metal, gas drifting through the darkness, everything
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moving around the young sun, carried by gravity and by
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the slow motion of the newborn solar system. Some pieces met,
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some moved apart, some stayed together, and gradually, Over a
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very long time, the small pieces began to gather into
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larger ones. You can imagine tiny grains of dust meeting
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in the darkness, resting against one another, slowly becoming larger
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collections of material. Then larger still, gravity was always there,
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quietly waiting. As something became more massive, its gravitational pull
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became stronger, allowing it to gather even more material around itself.
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This is one of the basic ideas scientists have used
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to imagine the birth of Jupiter. In this picture, Jupiter
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began with something like a seed, a growing centre made
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from heavier materials, perhaps rock and metal, slowly becoming large
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enough for its gravity to reach farther into the surrounding disk.
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And once that centre became sufficiently massive, it could begin
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gathering enormous amounts of gas, hydrogen, helium … the lightest
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materials drifting through the young solar system. Little by little,
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the growing planet would become larger. Its gravity would reach farther.
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More gas would fall inward, and Jupiter would begin to
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take the shape of the giant world you know today.
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It is a beautiful idea because it begins with something small.
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A little gathering of solid material becomes a larger gathering.
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The larger gathering becomes a young planetary body. And eventually,
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gravity transforms that growing body into one of the largest
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planets in the solar system. Scientists often describe this general
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idea as core accretion, but you do not need to
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hold onto that phrase. It is enough to imagine a
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small seed slowly gathering the surrounding world. Yet there is
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another possibility, a different way to imagine Jupiter being born.
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Instead of beginning with a large solid centre, Imagine a
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much larger cloud of gas, a cloud so enormous that
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its own gravity begins to pull it inward. At first,
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the cloud is spread widely through space, but gravity does
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not need to hurry. It simply keeps pulling. The cloud
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becomes denser, denser still, and eventually its own weight becomes
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enough to make it collapse inward. In this picture, Jupiter
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would not need to begin as a small rocky world
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that gradually captured its atmosphere. It could begin more like
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a great gathering of gas that slowly fell together under
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its own gravity. The process has something in common with
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the broad idea of how stars form, although Jupiter never
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gathered enough mass to become a star. And this possibility
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changes the question. If Jupiter began mainly as a collapsing
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cloud … Then perhaps there was never a small, compact
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centre waiting beneath all that gas. Perhaps the interior began
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in a much more complicated way. Perhaps the materials inside
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Jupiter were mixed together from the beginning. Two possibilities. Two
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very different beginnings. In one, a heavy centre comes first,
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and the gas gathers around it. In the other, a
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vast cloud gathers itself together, becoming a planet through its
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own gravity. And somewhere between those two possibilities lies the
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Jupiter that exists today. You can imagine both versions slowly,
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without needing to decide which one feels more natural. A
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tiny seed gathering everything around it, or a huge cloud
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slowly folding inward. Both are quiet processes. Both take enormous
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amounts of time, and both lead toward the same enormous planet.
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But there is something difficult about testing these ideas. You
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cannot simply look at Jupiter and see its history. The
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clouds do not carry a label telling you where they
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came from. The storms do not reveal whether Jupiter began
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with a rocky centre. And the enormous mass of the
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planet does not, by itself, tell you how all that
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material first gathered together. To understand Jupiter's beginning, scientists need
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clues from inside Jupiter itself. And for a very long time,
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those clues remained hidden. Then, in the summer of 1994,
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something unusual happened. A comet came toward Jupiter. It was
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not a spacecraft. It was not a scientific instrument. It
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was simply another ancient object moving through the solar system.
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But Jupiter's gravity was so strong that the comet could
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not remain whole. Slowly, the enormous pull of Jupiter began
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to stretch it apart. the comet separated into many pieces,
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and suddenly, this distant world had become the setting for
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one of the most remarkable natural experiments ever observed. The
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fragments were going to fall toward Jupiter, scientists on Earth
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prepared to watch, and somewhere in the darkness, a spacecraft
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was already on its way. Galileo was travelling toward Jupiter.
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It had not been sent there for this particular event.
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And yet, by an extraordinary coincidence, it would be in
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the right place at the right time. The giant planet
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that had hidden its interior for billions of years was
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about to be disturbed by a chain of impacts. For
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a brief moment, its clouds would brighten, material would rise
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above the atmosphere, and the quiet surface we thought we
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knew would reveal just a little more of what was
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happening underneath. You can let that image remain for a while,
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a vast planet turning slowly in darkness. while fragments of
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an ancient comet drift toward it, and somewhere nearby, a
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small spacecraft waits silently for what Jupiter is about to show.
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For a while, you remain with the young solar system,
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where Jupiter is still only a growing possibility, gathering material
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in the darkness. Then, very slowly, time begins to move
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forward again, the Sun becomes familiar, The planets settle into
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their long journeys. Jupiter grows into the enormous world you know.
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And for billions of years it simply turns there, surrounded
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by clouds, keeping most of its interior hidden. From Earth,
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you can watch it. You can follow its movement across
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the night. You can point a telescope toward those pale
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bands and distant storms. But the deepest parts remain out
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of sight. Then, in the summer of 1994, Something unusual
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came drifting toward Jupiter. It was a comet. Its name
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was Shoemaker-Levy 9. It had travelled through the solar system
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carrying frozen material and rock, moving quietly through the darkness,
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until Jupiter's enormous gravity began to pull it closer. And
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Jupiter's gravity was not gentle with the comet. As the
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comet approached, the planet's immense gravitational pull stretched it apart.
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One object became many. The comet broke into a long
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chain of fragments, each piece following a similar path toward Jupiter.
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The largest fragments were still a few kilometres across, while
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others were much smaller. You can imagine them as a
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quiet procession of dark pieces moving through space, all slowly
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approaching the same enormous planet. Scientists realised what was about
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to happen. The fragments were going to collide with Jupiter.
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And because events like this are extremely uncommon, astronomers around
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the world prepared to watch. The Hubble Space Telescope was ready.
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Telescopes on Earth were ready. But there was a problem.
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The fragments were going to strike the far side of Jupiter,
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hidden from direct view from Earth. It seemed that the
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most interesting part of the event might happen when nobody
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could see it. And then there was Galileo. the spacecraft
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named after the astronomer who had first observed Jupiter through
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a telescope, was already travelling toward the planet. Galileo had
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been launched years earlier, long before anyone knew that this
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comet would arrive, and somehow its journey had placed it
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in a remarkable position. It would have a view that
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Earth could not have. So Jupiter continued turning, the fragments
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continued falling, and over several days piece after piece disappeared
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into the planet's atmosphere. There were 21 major impacts. Each
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one briefly disturbed the enormous cloud layers. Some of the
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largest fragments released extraordinary amounts of energy. The exact numbers
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are difficult to imagine, and you do not need to
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imagine them. It is enough to picture a distant world
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suddenly marked by flashes and rising clouds of material, while
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the planet itself continued turning quietly beneath the event. Hubble
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watched the aftermath as Jupiter rotated. Dark marks appeared in
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the clouds. Huge plumes of material rose upward. Some of
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those traces remained visible for months. And then Galileo approached.
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The spacecraft was able to observe the impacts directly, seeing
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something that could never be seen from Earth in quite
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the same way. For a brief moment, Jupiter had been disturbed.
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Material from beneath the visible cloud layer had been carried upward.
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The planet had, in a sense, opened a small window
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into itself. Not a perfect window, not a clear view
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all the way to the centre, but enough to remind
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scientists that the beautiful clouds they had been studying for
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centuries were were only the outermost part of a much
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deeper world. And among Galileo's observations was something especially interesting, water,
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a surprisingly large amount of it. That discovery added another
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quiet question to the growing collection of questions surrounding Jupiter.
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Why was there so much water? What did it tell
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us about the material from which Jupiter had formed? And
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what might that water mean for everything beneath the clouds?
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The answer was not immediately clear, but sometimes a scientific
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discovery does not close a door. Sometimes it simply opens
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another one. Galileo had helped us look more closely at Jupiter,
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and now scientists wanted a spacecraft designed specifically to understand
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the planet's interior, its enormous magnetic environment, and the clues
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hidden inside its gravity. That spacecraft would be Juno. Juno
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was launched in 2011, arrived at Jupiter in 2016, beginning
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a new stage in our attempt to understand the giant planet.
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You can imagine Juno arriving after all those earlier observations.
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Pioneer had shown us Jupiter from close range. Voyager had
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shown us its moving clouds and storms. Galileo had entered
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the story during the extraordinary comet impacts and had sampled
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the atmosphere directly, and now Juno was preparing to look
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at Jupiter in another way, not simply through a camera,
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not simply by watching its clouds, but by listening to
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the planet's gravity, its magnetic field, and the subtle movements
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that could reveal what was hidden underneath. The picture was
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beginning to change. For a long time, Jupiter had been
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easy to describe. A giant planet. A gas giant. A
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world covered in clouds. But the closer we looked, the
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less complete that description became. The clouds were only the
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outer layer, and beneath them the material was becoming denser,
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the pressure was becoming stronger, the temperature was rising, water
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and ammonia were moving through strange layers of atmosphere, storms
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were reaching deeper than their gentle appearance suggested, and somewhere
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below all of this Hydrogen itself would begin to behave
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in a way that is almost impossible to imagine from
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the quiet surface of Earth. So you can remain here
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for another moment, floating above Jupiter. The comet has already passed.
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The dark marks are slowly fading. Galileo has continued onward.
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Juno has arrived. And the planet is turning beneath you
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as calmly as before. Nothing about Jupiter looks different from
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this distance. The bands still drift around the enormous sphere.
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The clouds still gather and separate. The storms still move.
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But now you know that the clouds are not the
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planet itself. They are only the beginning. And as your
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attention slowly follows them downward, the bright upper atmosphere begins
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to fade into deeper layers, where the pressure of the
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entire world above you begins to make its presence known.
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The farther down you drift, the warmer it becomes. and
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the hydrogen, still familiar in name, is about to become
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something very different. You are still floating above Jupiter. The
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planet turns slowly beneath you, carrying its pale bands and
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enormous storms through the darkness. From this distance, the clouds
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seem almost smooth. They stretch around the planet in long
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horizontal ribbons, some bright, some darker, moving in different directions.
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crossing one another, without ever becoming still. But if you
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drift closer, the smoothness begins to disappear. The clouds are
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not a painted surface, they are a moving atmosphere, filled
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with tiny particles, droplets, crystals, gases and currents that rise
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and fall through one another. And the first thing you
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notice is how cold the upper atmosphere can become. High
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above the deeper layers, temperatures can fall far below freezing.
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The clouds you see from space are made from different
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materials at different depths, and among them are compounds containing
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ammonia and other substances that give Jupiter some of its
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familiar colours. Farther down, water becomes more important. You can
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imagine the atmosphere not as a single cloud, but as
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many quiet layers, one resting beneath another. A bright cloud here,
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a darker region there, a deeper layer here, where water
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becomes more abundant, and all of it moving slowly around
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the planet. You do not need to picture a sharp
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boundary between one layer and another. Jupiter is not built
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like a stack of perfectly separated sheets. The changes happen gradually.
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The deeper you drift, the warmer and denser the surrounding
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material becomes. Water and ammonia can also behave in unusual
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ways inside these cold, turbulent clouds. In some regions, ammonia
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can mix with water and help keep the water from
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freezing as easily as it otherwise might. The result can
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be something that feels unfamiliar if you are thinking only
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in terms of Earth. Instead of ordinary rain falling from
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an ordinary cloud, you can imagine a slow mixture of droplets,
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ice crystals and slushy material moving through the atmosphere. Some
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particles fall, some melt, some evaporate. some are carried upward again.
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The cycle continues quietly inside the enormous atmosphere. And sometimes,
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these tiny movements become electrical. Water droplets and ice particles
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move through the clouds, colliding and separating, allowing electrical charges
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to gather. Eventually, the difference becomes large enough for lightning
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to occur. You might imagine being somewhere deep inside one
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of these clouds, surrounded by darkness, with only occasional flashes
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illuminating the surrounding material. There is no need to imagine
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the sound as a sudden explosion. Instead, think of the
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storm from very far away, a faint glow, then darkness again,
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another distant glow, and beneath all of it, the clouds
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continue moving. Jupiter's lightning can be extraordinarily powerful, but the
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process itself begins with very small things. tiny particles moving
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through a vast atmosphere. This is one of the quiet
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patterns that repeats throughout Jupiter. Small things, enormous consequences, a droplet,
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an ice crystal, a little movement, and eventually a flash
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of light across a storm larger than an entire planet.
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Far away from you now, the great red spot slowly turns.
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You have probably seen it before in photographs. a reddish
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oval surrounded by pale clouds, looking almost like a mark
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painted onto Jupiter. But it is not a mark. It
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is a storm, and it is much deeper than it appears.
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Measurements from the Juno spacecraft have shown that the Great
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Red Spot extends hundreds of kilometres beneath the visible cloud tops.
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So when you look at it from above, you are
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not seeing the whole storm, you are seeing its uppermost expression.
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The visible colour is only part of the story. Sunlight
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interacts with chemicals high in the atmosphere, changing the appearance
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of particles suspended within the storm and contributing to its
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reddish colour. But the storm itself reaches downward. Far beneath
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the familiar oval shape, the atmosphere continues, the clouds become denser,
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the pressure increases, and the gentle movement you can see
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from space continues into regions you cannot see at all.
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For a moment, you can imagine following the great red
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spot downward. You begin above the clouds, where sunlight is
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still present. Then you move deeper. The light becomes softer.
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The surrounding atmosphere becomes thicker. The storm is no longer
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simply something you can look at. It becomes something you
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are passing through. And this is where Jupiter begins to
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feel very different from Earth. On Earth, when you look
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at a planet from space, you can usually identify where
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the atmosphere ends and the solid world begins. There is
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a surface beneath the clouds. There is land. There is ocean.
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There is somewhere to stand. Jupiter offers no such simple boundary.
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The clouds are only the visible beginning. And compared with
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the enormous size of the planet, that visible weather layer
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is surprisingly thin. The uploaded source describes the main ammonia
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and water cloud region as roughly 50 kilometres deep, an
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almost delicate layer compared with the enormous world beneath it.
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So you can imagine Jupiter now as something much larger
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than the image you see in a telescope, a thin,
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restless layer of weather wrapped around a vast interior, and
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you are slowly passing through that layer. The colours begin
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to fade. The familiar clouds become less distinct. The sunlight
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becomes more distant. The pressure around you grows stronger. You
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continue downward, not because you need to reach anything, but
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simply because the planet itself seems to invite you deeper.
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Below the clouds, there is no sudden doorway. No line
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painted across the atmosphere. Only a gradual change. More pressure.
30:06
More warmth. More density. The hydrogen around you is still
30:10
a gas in these upper regions. But farther down, the
30:14
weight of everything above you becomes enormous. The hydrogen is
30:18
pressed closer and closer together. And slowly, almost imperceptibly, the
30:24
familiar gas begins to behave differently. You are leaving behind
30:28
the Jupiter that photographs can show you. The Jupiter of
30:32
stripes and clouds. The Jupiter of lightning and storms. The
30:36
Jupiter that appears so simple from a great distance. And
30:41
beneath it, another Jupiter is waiting. A darker Jupiter. A
30:45
warmer Jupiter. A denser Jupiter. A world in which the
30:50
most common element begins to lose its familiar form. As
30:54
you drift deeper, there is less and less to see.
30:57
but there is more and more to feel in the
31:00
changing pressure around you, and somewhere below the clouds, hydrogen
31:04
is beginning its slow transformation. It is becoming something that,
31:09
on Earth, you would normally associate with an entirely different world,
31:14
something liquid. You have already passed through Jupiter's clouds. The
31:21
bright colours have faded behind you. The distant sunlight is
31:25
becoming softer. and the familiar patterns of the atmosphere are
31:29
beginning to disappear. There is no clear moment when you
31:32
leave the clouds behind. Nothing opens beneath you. There is
31:37
no doorway. You simply continue downward. And as you descend,
31:42
something begins to change. The space around you becomes denser.
31:46
The pressure grows. The temperature rises. There is more material
31:51
above you now, pressing inward beneath the enormous weight of Jupiter.
31:56
At first, the change is difficult to notice. The hydrogen
32:00
surrounding you is still behaving like a gas. It is
32:04
moving freely, spreading through the space around you. But Jupiter
32:09
is very large, and all that material above you has weight.
32:14
The deeper you go, the more that weight becomes part
32:17
of your surroundings. You might imagine descending into an ocean
32:21
on Earth. At the surface, the water feels light. A
32:25
little farther down, the pressure begins to increase. Deeper still,
32:30
the weight of the water above you becomes noticeable. Now
32:34
imagine replacing that ocean with an entire planet. Not an
32:38
ocean covering a planet, but a planet made largely from
32:42
material that gradually becomes more fluid and more tightly packed
32:47
as you descend. That is the strange world beneath Jupiter's clouds.
32:52
The pressure continues to rise. The temperature continues to rise,
32:57
and hydrogen, which is normally a very light gas, begins
33:02
to behave differently. It becomes harder and harder to think
33:06
of the material around you as ordinary gas. The molecules
33:11
are being pushed closer together, the hydrogen becomes denser, and eventually,
33:16
in the deeper regions of Jupiter, it behaves as a liquid.
33:20
This is one of the simplest ways to understand why
33:23
Jupiter is not quite what it first appears to be.
33:26
From far away, Jupiter looks like a giant ball of gas.
33:31
But deep inside, much of that hydrogen is not behaving
33:34
like the thin gas surrounding you here on Earth. It
33:37
is compressed into an enormous fluid region. You can imagine
33:41
a vast ocean, but an ocean without a shoreline, an
33:45
ocean without waves reaching a beach. an ocean with no
33:49
surface you could stand upon, just an immense region of
33:53
hydrogen becoming increasingly dense as it slowly surrounds you. NASA
33:58
describes Jupiter's interior as becoming progressively denser with depth, with
34:03
hydrogen transitioning from gas into a liquid-like state under the
34:08
enormous pressure, and the deeper you drift, the stranger this
34:13
ocean becomes. On Earth, Hydrogen is usually associated with a
34:17
very cold environment when you think of it as a liquid.
34:21
Liquid hydrogen is something that requires extremely low temperatures here.
34:26
But Jupiter is different. Deep inside this planet, the pressure
34:31
is so immense that hydrogen can exist as a dense
34:34
fluid even while the temperature is extraordinarily high. It is
34:39
one of those quiet contradictions that makes Jupiter so fascinating,
34:43
cold and hot. gas and liquid, familiar and unfamiliar. The
34:49
same element you can imagine as an almost weightless gas
34:53
can become part of an enormous liquid interior. You do
34:56
not need to picture a dramatic transformation. There is no
35:00
sudden flash, no sharp boundary. The change happens gradually. The
35:05
deeper you move, the more crowded the hydrogen becomes. The
35:09
pressure grows stronger, the temperature rises, and slowly the The
35:14
material begins to behave less like a gas and more
35:17
like a fluid. This gradual change is important. There is
35:22
no ordinary ocean surface inside Jupiter. There is no exact
35:26
line saying, here the atmosphere ends and here the ocean begins. Instead,
35:33
Jupiter changes continuously. Gas becomes denser. Dense gas begins to
35:39
behave more like a fluid. The fluid becomes more compressed.
35:43
And deeper still, another transformation waits. But for now, you
35:49
can remain inside this immense liquid region. Imagine yourself floating there.
35:55
There is no floor beneath you, no ceiling above, no horizon,
36:00
only darkness and a slowly moving fluid surrounding you in
36:05
every direction. The hydrogen itself is almost impossible to visualise.
36:10
You cannot see it as a blue ocean. It has
36:13
no familiar colour. It is simply matter, packed tightly together
36:18
beneath the enormous weight of the planet. And yet, in
36:21
this quiet way, you have reached something extraordinary. You are
36:26
no longer imagining Jupiter as a ball of gas. You
36:29
are inside a world where hydrogen has become a liquid.
36:33
The source material describes this liquid hydrogen region as extending
36:37
for roughly 20,000 kilometres, an immense depth that is difficult
36:42
to compare with anything familiar on Earth. You can let
36:46
that scale become abstract. You do not need to picture
36:50
the entire distance. Just imagine continuing downward for a very
36:54
long time, still deeper, still warmer, still denser, and still
37:00
surrounded by hydrogen. The planet above you is enormous. The
37:05
planet around you is enormous. And the deeper you travel,
37:09
the more you begin to realise that Jupiter is not
37:13
really divided into simple layers, like a fruit with a skin,
37:17
flesh and seed. Its interior is more gradual than that,
37:22
more blended, more fluid. The atmosphere becomes a deeper atmosphere.
37:28
The gas becomes a denser fluid, the fluid becomes something
37:32
even stranger, and eventually the pressure becomes so strong that
37:37
the electrons within the hydrogen are able to move much
37:39
more freely. This is where the word metal begins to
37:44
enter the story, but not yet. For now, you can
37:48
simply remain here, drifting inside Jupiter's vast liquid interior. The
37:53
clouds are far above you, the great red spot is
37:56
far above you, the sunlight is far above you, and
38:00
beneath you the planet continues. There is no sound, Only
38:05
the imagined feeling of slow movement through an immense fluid.
38:10
The deeper you go, the less Jupiter resembles the planet
38:13
you saw from space. And perhaps that is the most
38:16
beautiful part. The planet has not changed. Only your perspective
38:20
has changed. From far away, it was a striped world
38:24
of clouds. A little deeper, it became a world of storms.
38:28
Deeper still, it became an ocean. And now... As you
38:32
continue downward through that silent ocean, the hydrogen is approaching
38:37
a state that seems almost impossible to imagine, a state
38:40
where the lightest element begins to behave like something much heavier,
38:45
like a metal, and somewhere in that deep, quiet darkness,
38:49
the invisible currents of Jupiter are beginning to awaken. You
38:56
are still drifting inside Jupiter. The clouds are now unimaginably
39:00
far above you. The sunlight has disappeared completely, and there
39:04
is no longer any familiar sense of sky. Around you,
39:08
hydrogen fills the darkness. It is dense, warm, and slowly moving,
39:15
pressed together by the immense weight of everything above. You
39:18
continue downward. There is no sudden change. The planet does
39:22
not announce that you have entered a new region. Instead,
39:26
the pressure simply continues to increase. The temperature continues to rise,
39:31
and the hydrogen continues to become more tightly packed. If
39:35
you could somehow observe the tiny particles around you, you
39:39
would find that they are no longer behaving quite like
39:42
the hydrogen gas you know. The deeper you travel, the
39:46
more unusual the material becomes, and eventually, another quiet transformation begins.
39:53
The hydrogen starts to behave like a metal. This does
39:57
not mean that it becomes a solid piece of metal.
40:00
There is no hidden floor of silver or iron waiting
40:03
beneath you. There is no metallic surface. Instead, the hydrogen
40:08
remains a fluid. But under the enormous pressure inside Jupiter,
40:13
the electrons associated with the hydrogen can move much more freely.
40:18
And that changes everything. You can imagine the difference very gently.
40:23
In ordinary hydrogen, the electrons are more closely tied to
40:27
their atoms. But under the immense pressure deep inside Jupiter,
40:32
the material becomes compressed so strongly that those electrons can
40:37
move through the surrounding fluid more easily. The result is
40:41
a strange liquid that can conduct electricity. Scientists call this
40:45
metallic hydrogen. You only need to remember the name if
40:49
you want to. The important image is simpler. You are
40:53
drifting through a vast ocean that can carry electricity. An
40:57
ocean made not of water, but of hydrogen. A silent,
41:01
invisible ocean moving deep inside a planet. And this strange
41:05
property helps explain one of Jupiter's most remarkable features. Its
41:10
enormous magnetic field. You cannot see a magnetic field directly.
41:16
There is no glowing shell around Jupiter. no visible boundary.
41:21
But the magnetic field extends far beyond the clouds, reaching
41:25
outward into space, and much of the story begins deep inside.
41:30
Jupiter rotates very quickly. As the planet turns, the conducting
41:35
fluid inside it also moves. That movement, combined with the
41:39
electrical conductivity of metallic hydrogen, allows powerful electrical currents to develop.
41:46
Those currents help generate Jupiter's magnetic field. So something happening
41:50
in darkness, thousands of kilometres beneath the clouds, reaches outward
41:55
across an enormous region of space. You can let that
41:58
connection settle gently in your mind. Deep inside the planet,
42:03
hydrogen flows. The hydrogen can carry electricity. The planet turns,
42:09
electrical currents develop, and a magnetic field grows around the world.
42:14
Nothing dramatic needs to happen. There is no single moment
42:17
when the magnetic field suddenly appears. It is more like
42:21
a slow, continuous process that has been taking place for
42:25
an unimaginably long time. Jupiter turns, the fluid moves, the
42:30
currents continue, and the invisible magnetic environment remains around the planet.
42:37
From Earth, we can never see the metallic hydrogen directly.
42:41
We cannot simply look through Jupiter's clouds and watch the
42:45
fluid moving inside. Instead, scientists study the effects. They observe
42:51
Jupiter's magnetic field. They measure tiny changes in its gravity.
42:56
They study how the spacecraft moves as it passes around
42:59
the planet. And from these subtle clues, they begin to
43:03
reconstruct the hidden world below. It is almost like listening
43:08
to a distant instrument through a closed door. You cannot
43:12
see what is happening inside, but you can hear the consequences.
43:16
Juno became especially important for this reason. Its measurements allowed
43:21
scientists to investigate Jupiter's interior in ways that earlier spacecraft
43:26
could not. The spacecraft did not need to drill into Jupiter.
43:31
It did not need to land, it simply travelled around
43:33
the planet, carefully measuring the subtle effects of Jupiter's enormous
43:38
mass and magnetic environment. And from those measurements came a
43:42
surprising realisation. The interior of Jupiter did not seem to
43:47
match the simplest picture. For a long time, it was
43:50
easy to imagine a giant planet with a small, dense centre.
43:54
A compact core. Something solid and heavy hidden beneath the
43:59
immense layers of hydrogen. But Jupiter was beginning to suggest
44:03
something different. The deeper scientists looked, the less comfortable the
44:07
simple picture became. The metallic hydrogen region itself appeared to
44:12
be part of a much more complicated interior, and somewhere
44:16
beneath it, the centre of Jupiter might not have a
44:19
sharp edge. It might not be a neat ball. It
44:23
might not even be easy to say exactly where the
44:26
core begins. You can remain here for a moment, drifting
44:30
through this strange metallic ocean. There is no light, no sound,
44:35
no visible metal. only an immense fluid moving slowly beneath
44:40
the weight of an entire planet. Above you are the clouds.
44:44
Far above them is the sunlight. Around you is hydrogen,
44:49
but this is no longer ordinary hydrogen. It is dense,
44:53
it is hot, it can conduct electricity, and its slow
44:57
movement helps create a magnetic field that stretches far beyond
45:01
the planet itself. The invisible and the visible are quietly connected.
45:06
A storm in the clouds. A current deep inside. A
45:10
magnetic field reaching into space. All part of the same world.
45:16
And perhaps this is what makes Jupiter so difficult to picture.
45:20
The farther you travel inward, the less useful ordinary words become. Gas. Liquid. Metal. Core.
45:29
Each word gives you a small piece of the picture,
45:31
but none of them describes the entire interior. the material
45:35
does not arrange itself into perfectly separate layers. The changes
45:40
are gradual, the boundaries are blurred, and as you drift deeper,
45:44
the hydrogen begins to mix with heavier material, rock, metal,
45:50
elements gathered long ago when Jupiter was forming. They may
45:53
not remain neatly separated, they may be spread through a
45:57
broad region. The deeper you go, the more the old
46:00
picture begins to dissolve, and eventually, you reach the quietest
46:05
mystery of all. The place we call Jupiter's core may
46:09
not really look like a traditional core. It may be
46:12
something broader, something more diffuse, something that fades gradually into
46:18
the metallic hydrogen around it. So you continue drifting downward,
46:22
the magnetic field continues to surround the planet, the metallic
46:26
fluid continues to move, and somewhere beneath this vast electric
46:31
ocean The centre of Jupiter waits in a form that
46:34
may be far softer, far wider, and far less clearly
46:38
defined than anyone once imagined. You have drifted through Jupiter's clouds.
46:46
You have passed into its immense liquid interior. And now,
46:50
far below the familiar atmosphere, you are approaching the deepest
46:54
region of the planet. The metallic hydrogen still surrounds you.
46:59
It is dense, warm. and slowly moving. The pressure is immense.
47:04
There is no sunlight here. There is no horizon. There
47:08
is only the quiet interior of a world that has
47:11
been turning through space for billions of years. And somewhere
47:15
below you is what we call Jupiter's core. At least,
47:19
that is the word we use. For a long time,
47:23
scientists imagined this core as something fairly simple. A compact,
47:28
dense object, hidden at the very centre of the planet.
47:32
You could picture it as a small heavy ball, surrounded
47:35
by layer after layer of hydrogen, rock, metal, heavy material
47:42
gathered together at the beginning of Jupiter's life. Above it,
47:46
an enormous ocean of hydrogen. The picture was neat, the
47:50
centre was solid, the surrounding material was fluid, and somewhere
47:54
between them there was a clear boundary. It was an
47:58
understandable picture, but Jupiter did not seem to agree with it.
48:02
As scientists studied the planet more carefully, especially through measurements
48:07
made by the Juno spacecraft, the interior began to look
48:11
less like a series of clean layers and more like
48:14
something that had been gently stirred together. The core appeared
48:18
to be much more spread out than expected, not a
48:21
small sharply defined ball, something broader, something softer at its edges.
48:28
something that gradually blends into the surrounding material. Scientists sometimes
48:33
describe this as a fuzzy core. The word sounds almost playful.
48:38
But beneath the name is a very strange idea. The
48:42
boundary between the deep metallic hydrogen and the heavier material
48:47
at Jupiter's centre may not be a simple line. Instead,
48:51
the materials may overlap. They may gradually become more concentrated
48:56
as you move inward. rock and metal may be mixed
48:59
into the surrounding fluid. The centre may be less like
49:03
a stone hidden inside an ocean, and more like a
49:06
dense mixture whose ingredients become increasingly concentrated toward the middle.
49:11
The uploaded source describes this region as extending across roughly
49:15
half of Jupiter's radius, and compares it to a dense
49:19
mixture of liquid, rock and metal, without a sharp boundary
49:23
between the different forms of matter. You can imagine a
49:26
bowl of thick soup. At first, the image may seem
49:30
almost too ordinary for something happening inside Jupiter, but imagine
49:35
that the soup has no surface. Imagine that it fills
49:38
an enormous part of the planet. Imagine that heavier ingredients
49:43
slowly become more common as you move toward the centre,
49:47
while the surrounding fluid gradually changes along with them. There
49:52
is no clean place where you can point and say,
49:55
here is the core. Instead, there is a region, a
49:59
gradual transition, a quiet blending. And this creates another question.
50:05
Why would Jupiter have such a strange centre? One possibility
50:09
reaches back to the very beginning of the solar system.
50:12
Perhaps Jupiter once experienced a collision of extraordinary size. Imagine
50:17
the young Jupiter, still forming, surrounded by other growing worlds.
50:22
In the same early solar system, there may have been
50:25
large rocky bodies moving through the darkness. One hypothesis suggests
50:30
that a rocky planet, potentially many times more massive than Earth,
50:35
could have collided with the young Jupiter. You do not
50:38
need to picture the collision as an explosion in the
50:41
usual sense. Instead, imagine two enormous young worlds meeting, while
50:47
everything around them is still unfinished. The energy would be immense.
50:52
Material from Jupiter's original centre could have been scattered outward.
50:56
Rock and metal that had once been concentrated in one
50:59
place could have been mixed into the surrounding hydrogens. The
51:03
result could have been a diluted, spread-out core, a fuzzy centre.
51:08
It is an intriguing possibility. It could explain why Jupiter's
51:12
deepest region looks different from the simple compact core scientists
51:16
once expected. It might even help explain some aspects of
51:20
Jupiter's enormous growth. But there is a quiet problem. A
51:25
possibility is not the same as an answer. Scientists have
51:29
tried to recreate such enormous collisions using computer simulations. They
51:34
allow virtual worlds of different sizes and compositions to meet
51:38
a young Jupiter under different conditions. And in some simulations
51:43
something interesting happens. The collision can indeed produce a fuzzy core.
51:49
The heavy material spreads outward. The neat central structure becomes disturbed.
51:54
For a moment The young Jupiter looks remarkably similar to
51:58
the Jupiter we think we see today. But then another
52:01
process begins. The mixed material tends to settle. Gravity continues
52:06
pulling heavier material inward. Over time, the diffuse core can
52:11
begin moving toward a more compact arrangement again. The fuzzy
52:15
centre starts becoming less fuzzy. And this leaves the collision
52:19
idea with an unanswered question. If a giant impact created
52:23
the fuzzy core, Why has the core remained diffuse for
52:27
so long? Why has Jupiter not simply allowed gravity to
52:31
gather the heavier material back toward the centre? The simulations
52:35
do not provide a final answer. They give us a possibility,
52:39
a possible beginning, but not a complete history. And so
52:43
you remain here, deep inside Jupiter, surrounded by a world
52:48
that refuses to become simple. Above you is metallic hydrogen.
52:52
Below you is the diffuse region we call the core,
52:56
but there is no obvious line separating one from the other.
53:00
The farther inward you drift, the more concentrated the heavy
53:03
material becomes. Yet the transition remains gradual. You cannot point
53:08
to one moment and say that you have crossed into
53:11
the core. You simply continue inward, and perhaps that is
53:15
the most beautiful part of the mystery. Jupiter does not
53:18
seem to care about the neat categories we use to
53:21
describe it, Gas, liquid, metal, core. These words are useful,
53:28
but the planet itself is more complicated. Nature does not
53:31
always draw sharp boundaries. Sometimes one state slowly becomes another.
53:37
Sometimes materials mix. Sometimes the history of a world remains
53:42
written in a structure that we can measure, but not
53:45
completely explain. And perhaps the fuzzy core is exactly that,
53:50
a memory. a quiet trace of Jupiter's earliest history. Maybe
53:54
it remembers an ancient collision. Maybe it formed through a
53:58
more complicated process during Jupiter's birth. Maybe diffuse cores are
54:03
not unusual at all. Perhaps other giant planets have them too,
54:08
waiting beneath their own clouds. We simply do not yet know.
54:12
You have reached the deepest place in this journey, but
54:15
there is still no final answer waiting beneath you. Only
54:19
a broad, mysterious centre. A planet that began billions of
54:23
years ago, still carrying traces of that beginning inside itself.
54:28
And as you slowly let yourself drift back upward through
54:31
the metallic hydrogen, one thought can remain behind you in
54:35
the darkness. We know what Jupiter looks like. We know
54:38
something about what it is made of. But we still
54:41
do not completely know how it became this way. And
54:45
perhaps that unanswered question is what makes the enormous planet
54:49
above you feel a little more alive, a little more mysterious,
54:53
and a little more beautiful in the quiet darkness. You
55:00
have reached the deepest part of Jupiter that this quiet
55:03
journey can take you. Around you, the darkness is almost complete.
55:07
The metallic hydrogen continues its slow movement. Farther inward, heavy
55:12
material becomes increasingly concentrated. and somewhere within that broad, diffuse
55:18
region is the place we call Jupiter's core. But perhaps
55:22
now the word core feels a little different. At the
55:25
beginning of this journey, you might have imagined a small,
55:28
solid centre, something like a stone hidden inside an enormous planet.
55:34
A simple centre, a clear boundary, a beginning and an end.
55:39
Now the picture is softer. The deeper material may be
55:42
spread across a much larger region. Rock, metal, and surrounding
55:46
fluid may blend together. There may be no simple line
55:50
where one layer suddenly becomes another, and the reason for
55:54
this strange structure remains uncertain. The possibility of an ancient
55:58
collision is still there, perhaps a very large rocky world
56:02
once crossed paths with young Jupiter. Perhaps the impact disturbed
56:07
the heavy material gathering at its centre. Perhaps it scattered
56:10
that material outward and left Jupiter with the diffuse interior
56:14
we see today. But the computer simulations leave us with
56:17
another quiet question. The simulations can create a fuzzy centre
56:22
after a giant collision. Yet the mixed material tends to
56:26
settle again. Gravity keeps working. Heavy material slowly moves inward.
56:32
The diffuse structure begins to become more compact, and so
56:36
the collision may be part of the story without being
56:39
the whole story. there may be something about Jupiter's early
56:43
history that we still do not understand. Perhaps its formation
56:48
was more complicated than either of the simple pictures we
56:51
imagined earlier. Perhaps the original material was mixed from the beginning.
56:56
Perhaps Jupiter grew through processes that we have not yet
57:00
completely reconstructed. Or perhaps the fuzzy centre is not strange
57:05
at all. Perhaps this is simply how giant planets work.
57:09
That possibility is especially interesting, because we have spent most
57:13
of this journey talking about Jupiter. But Jupiter is not
57:17
the only giant planet in our solar system. There is Saturn.
57:21
Farther away, there are the ice giants, Uranus and Neptune.
57:27
And beyond our solar system, there are enormous numbers of
57:30
planets orbiting other stars. Some of them are much larger
57:33
than Earth. Some are close to their stars. Some are
57:37
extremely cold. Some are called hot Jupiters because they resemble
57:42
Jupiter in size while orbiting very close to their stars.
57:46
But we have not yet been able to look inside
57:48
most of these distant worlds. So we do not know
57:51
whether Jupiter's diffuse centre is something unusual, or whether it
57:56
is simply one example of a much more common planetary interior.
58:00
That is one of the quiet questions Jupiter leaves behind.
58:04
Is Jupiter strange? Or are we only beginning to discover
58:08
what giant planets are really like? You can let that
58:11
question drift through the darkness without trying to answer it,
58:15
because science does not always move by replacing every mystery
58:19
with a fact. Sometimes it moves by discovering that an
58:22
old question was much larger than anyone realised. Pioneer 11
58:27
gave us one of our first close looks at Jupiter.
58:31
Voyager 1 showed us the planet as a living world
58:34
of moving clouds and enormous storms. Galileo gave us a
58:39
remarkable view during the arrival of Shoemaker-Levy 9 and found
58:44
unexpected water in the atmosphere. Then Juno arrived, carrying instruments
58:49
designed to listen more carefully to the hidden structure of
58:53
the planet. Each spacecraft gave us something new, and each
58:57
one made Jupiter a little more complicated. That is perhaps
59:01
the most interesting pattern of all. The first images showed
59:05
us the clouds. Then we discovered what was beneath the clouds.
59:10
Then we discovered the liquid hydrogen. Then metallic hydrogen. Then
59:15
the enormous magnetic field connected to that hidden fluid. Then
59:20
the strange diffuse centre. And after all of that, one
59:24
question remains. How did Jupiter become this way? The source
59:28
material describes this uncertainty directly. Despite the spacecraft and observations
59:34
that have transformed our understanding, scientists still do not have
59:38
a clear explanation for how Jupiter acquired its unusual interior.
59:44
You can slowly begin drifting upward now, not because the
59:47
journey has to end quickly, simply because you have spent
59:51
enough time in the deepest darkness. The metallic hydrogen surrounds you.
59:56
You begin moving through it slowly, The pressure gradually becomes lighter.
1:00:01
The fluid becomes less dense. Far above you, somewhere beyond
1:00:05
thousands of kilometres of material, the clouds are waiting. You
1:00:09
continue upward. The invisible magnetic field remains around the planet.
1:00:15
The great currents continue moving deep below. The core remains
1:00:19
where it has always been, holding its unanswered history. And eventually,
1:00:25
the darkness begins to soften. The upper layers are becoming closer.
1:00:30
The clouds begin to return, first as a distant suggestion,
1:00:34
then as faint layers, then as broad bands of pale
1:00:38
colour moving around the enormous planet. You rise through the
1:00:42
atmosphere and once again see the familiar Jupiter. The great
1:00:46
red spot is turning. Lightning is quietly appearing inside distant clouds.
1:00:52
Water and ammonia are moving through the atmosphere. The planet
1:00:56
looks almost exactly as it did when you first arrived,
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but now you know that the familiar image is incomplete.
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The clouds are only the outermost expression of a much
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deeper world. Beneath them is an immense fluid interior. Deeper
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still is metallic hydrogen, carrying electrical currents through the darkness.
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And farther down is a strange centre whose boundaries are
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difficult to draw, so perhaps Jupiter was never simply a
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giant ball of gas. Perhaps it was always something more subtle,
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a world of gradual transitions, a world without a simple surface,
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a world where the lightest element can become a dense
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liquid and then a conducting metallic fluid, a world whose
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centre may be less like a solid heart and more
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like a slowly blended memory of its earliest history. And
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perhaps that is why Jupiter remains so fascinating. Not because
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we know everything about it, but because every time we
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look more closely, There is another quiet layer beneath what
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we thought we understood. You are now above the clouds again.
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Jupiter is below you. The planet is turning slowly in
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the darkness. There is nothing left for you to solve tonight.
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You do not need to decide how Jupiter formed. You
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do not need to decide whether the collision happened. You
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do not need to know whether other giant planets carry
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the same strange interior. Those questions can remain there, deep
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inside the planet. waiting for another spacecraft, another observation, another
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generation of scientists. For now, you can simply watch Jupiter turn.
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The clouds continue moving, the storms continue circling, the hidden
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hydrogen continues flowing, and somewhere beneath all of it, the
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mystery remains quiet. Perhaps Jupiter has an answer. Perhaps it
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has several. Perhaps the planet itself is simply carrying the
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history of its birth in a language we are still
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learning how to read. And while Jupiter continues turning through
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the darkness, you can let your attention become lighter, the
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distant clouds becoming softer, the enormous planet slowly becoming smaller
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in your imagination, until it is once again only a
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quiet point of light, drifting peacefully through the night. And so,
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after drifting through Jupiter's clouds, you can slowly let the
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journey become quieter. The enormous planet is still turning beneath you,
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wrapped in its pale bands of cloud, its distant storms
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moving gently through the darkness. The great red spot continues
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its slow rotation. Far below those familiar clouds, liquid hydrogen
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continues to flow. Deeper still, Metallic hydrogen moves through the
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immense pressure of the planet, carrying invisible electrical currents that
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help sustain Jupiter's enormous magnetic field. And somewhere farther down,
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hidden beneath thousands of kilometres of dense material, the fuzzy
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core remains. A strange centre without a perfectly clear boundary,
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perhaps shaped by the earliest moments of Jupiter's formation, perhaps
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altered by an ancient collision. Perhaps formed through a process
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we have not yet completely understood. You do not need
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to solve that mystery tonight. You do not need to
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decide how Jupiter was born. You can simply let the
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questions remain where they are, quietly resting inside the planet.
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Perhaps one day we will understand its beginning. Perhaps another
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spacecraft will discover another clue. Perhaps Jupiter will reveal that
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its interior is even stranger than we imagined. But for now,
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you can leave those questions drifting in the darkness. You
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are safe. There is nothing to do, nothing to remember,
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nothing to figure out. Just listen and drift. Above Jupiter,
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the stars remain still. The planet continues its enormous journey
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around the sun. Its clouds continue moving. Its storms continue turning.
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Its hidden ocean continues flowing beneath the clouds. invisible from
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the distant surface, and the universe continues around it, vast
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and quiet. You can imagine Jupiter becoming smaller now, slowly
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receding into the darkness, its familiar bands becoming softer, its
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great red spot becoming only a tiny warm-coloured mark, and
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eventually the whole planet becoming a distant point beneath the
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endless night. Jupiter will keep turning while you sleep. The
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hydrogen will keep flowing, The magnetic field will continue stretching
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silently through space, and somewhere deep inside that enormous world,
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the mystery will remain, quiet, unhurried, waiting. So you can
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let your breathing become slow, let your body become heavy,
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let your thoughts become softer. There is nothing else you
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need to follow, nothing else you need to understand, just
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the quiet image of a giant planet drifting through space.
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carrying its ancient secrets beneath layers of clouds and darkness.
1:06:17
And as Jupiter continues turning far away, you can slowly
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drift somewhere quieter still, somewhere beyond the clouds, beyond the storms,
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beyond the metallic ocean, into the soft darkness where there
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is nothing left to discover tonight. Rest well. Jupiter will
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keep turning. The stars will keep shining. and the universe
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will continue carrying everything gently through the darkness while you sleep.