Latest / Daniel and Kelly’s Extraordinary Universe / Was/Is There Life On Mars?
Transcript
- 0:06Speaker 1: Hey, Daniel, let's talk about life. Yeah. One of the
- 0:09Speaker 1: most interesting mysteries about life is how did he get started?
- 0:13Speaker 1: I mean, how do you go from like a pile
- 0:14Speaker 1: of rocks and water and all sorts of energy to
- 0:17Speaker 1: things that actually live and turn into you know, people
- 0:20Speaker 1: and hamsters. Even more interesting is the question where did
- 0:24Speaker 1: life get Yeah, we don't even know whether life started
- 0:28Speaker 1: on Earth. I mean, life could have started somewhere else
- 0:31Speaker 1: in the universe and then landed here on Earth. We
- 0:34Speaker 1: could all be aliens, that's right. This is the science
- 0:38Speaker 1: fiction novel where the twist is that we are all
- 0:41Speaker 1: the aliens. But it's a deep question not just how
- 0:45Speaker 1: did life begin, but where did it begin first? And
- 0:48Speaker 1: it's not guaranteed that just because this life on Earth
- 0:51Speaker 1: now that it means that life started on Earth. Him
- 1:10Speaker 1: and I'm Daniel, and this is our podcast Daniel and
- 1:13Speaker 1: Jorge explained the universe, in which we take the whole universe,
- 1:16Speaker 1: find one interesting little nugget and try to explain it
- 1:19Speaker 1: to you in a way that you could actually understand.
- 1:21Speaker 1: No jargon, no handwaving, because it's a podcast, just actual
- 1:26Speaker 1: understandable explanations. We can press it down to thirty five minutes,
- 1:29Speaker 1: thirty minutes and then stick it in your ear downloaded
- 1:33Speaker 1: directly into your brain. On the episode today, we're going
- 1:36Speaker 1: to talk about is there or was there ever life
- 1:44Speaker 1: on Mars? I love this question because it's like Mars
- 1:48Speaker 1: is the other laboratory for life. You know, we all
- 1:50Speaker 1: know this life on Earth. It's a deep question about
- 1:53Speaker 1: how did life start on Earth? And when did it
- 1:54Speaker 1: start on Earth? And how do you start from like
- 1:57Speaker 1: a pool of water with molecules in it and lightning
- 1:59Speaker 1: and get to life? Right? But the other question is
- 2:02Speaker 1: like does it happen elsewhere? Right? If you have similar
- 2:05Speaker 1: conditions somewhere else nearby, like the next door planet, then
- 2:09Speaker 1: you can ask like did it happen there as well? Yeah?
- 2:12Speaker 1: Are we the only planet in our Solar system or
- 2:15Speaker 1: even the universe who has lives? Lives? Lives? Life? Does Mars?
- 2:21Speaker 1: Even how a life it stays in the weekends? Mars
- 2:24Speaker 1: turns out to be pretty dull. Ye. Now, we're not
- 2:27Speaker 1: interested in Mars is social life. We're interested in was
- 2:30Speaker 1: there ever life on Mars? And is there life on Mars? Today?
- 2:35Speaker 1: And it's a deep question because it will tell us
- 2:36Speaker 1: a lot about how life starts and what the chances
- 2:39Speaker 1: are for life to start if you have the basic ingredients.
- 2:42Speaker 1: You mean, we could have neighbors right now looking at us.
- 2:45Speaker 1: There could be right now life on Mars. Yeah. Oops,
- 2:48Speaker 1: I just spoiled the answer to the whole podcast. They're
- 2:53Speaker 1: probably not looking at us, but there may very well
- 2:56Speaker 1: be life on Mars today. Whether it came from Earth,
- 3:00Speaker 1: or whether it started on Mars, or whether life staro
- 3:03Speaker 1: Mars and then came to Earth all open questions. So
- 3:06Speaker 1: this is a big question and it's pretty ingraining in
- 3:09Speaker 1: our popular culture. You know, Martians, little green men, aliens
- 3:13Speaker 1: from Mars, and so we wanted to know if you
- 3:15Speaker 1: guys out there knew with the answer to this question
- 3:19Speaker 1: whether there is life on Mars. Yeah. So before you
- 3:21Speaker 1: hear these answers, think to yourself, what do you know
- 3:24Speaker 1: about life on Mars? What do you believe or what
- 3:27Speaker 1: do you hope for life on Mars. I went out
- 3:29Speaker 1: and I asked random people on the UC Irvine campus
- 3:32Speaker 1: what they thought about this question. Um, I think it's possible.
- 3:38Speaker 1: It's possible. Ye could be if you know that water
- 3:41Speaker 1: has been found, um, not like human beings. Possibly, yes,
- 3:46Speaker 1: what kind of life do you measure even like bacteria. Even, yes,
- 3:51Speaker 1: I think it's possible. I believe like even if you've
- 3:55Speaker 1: never seen it or discoverd it doesn't mean it doesn't
- 3:57Speaker 1: mean like it doesn't exist. Right, So most people said maybe, right, Yeah,
- 4:02Speaker 1: most people are pretty open to the idea. You know,
- 4:05Speaker 1: they thought that probably is life on Mars. They know
- 4:07Speaker 1: that there's water on Mars. So the takeaway here is
- 4:10Speaker 1: that NASA has done an excellent job with their pr
- 4:12Speaker 1: you know, they spend billions of dollars, they make these discoveries,
- 4:15Speaker 1: and they educate the public about it. Right, everybody has
- 4:18Speaker 1: heard about these discoveries they've made about discovering water on Mars. Yeah.
- 4:22Speaker 1: People are just captivated about this idea, right, Like they
- 4:25Speaker 1: just have to say Mars or we're going to Mars,
- 4:27Speaker 1: or there's water on Mars, and people just kind of
- 4:29Speaker 1: instantly pay attention. Yeah, absolutely, because it's right there. You know,
- 4:34Speaker 1: the idea of aliens being alive somewhere in the universe
- 4:37Speaker 1: is fascinating, but it's kind of remote. You know, it's distant, like, yeah, okay,
- 4:40Speaker 1: maybe there's life around Alpha Centauri or some other crazy galaxy.
- 4:44Speaker 1: You can talk about that in the abstract, but they're
- 4:46Speaker 1: so far away they will never get here, right, it
- 4:48Speaker 1: doesn't really matter. But if there's life on Mars, I mean,
- 4:52Speaker 1: Mars is a hop, skip and a jump away, right,
- 4:54Speaker 1: it's it's it's a few months to get to Mars.
- 4:57Speaker 1: So life on Mars we could actually go there and
- 4:59Speaker 1: we could study it. They could come here. It's an
- 5:02Speaker 1: amazing opportunity to learn about life. It's real, it's close by.
- 5:05Speaker 1: I mean you're assuming they haven't been here already, that's right.
- 5:08Speaker 1: It could be there are Martians among us. Maybe you're
- 5:12Speaker 1: the Martian, right, maybe martial. Maybe we're all Martians. I
- 5:15Speaker 1: am yeah, I am a Martian. I am totally just
- 5:17Speaker 1: like Matt Damon in that movie. You know. As a
- 5:20Speaker 1: note about the Martian, I heard that a huge fraction
- 5:22Speaker 1: of people who saw the movie the Martian thought it
- 5:25Speaker 1: was a documentary. No, I thought it really happened, and
- 5:28Speaker 1: they were pretty disappointed when they discovered what that's science fiction. Wow,
- 5:32Speaker 1: that's amazing. For all the people do know about Mars,
- 5:35Speaker 1: you know that there's water on, etcetera. They seem to
- 5:37Speaker 1: have the impression that we have the capability to go
- 5:39Speaker 1: there today, which certainly is not the case. It's a
- 5:42Speaker 1: big testament to that story and that movie is that
- 5:44Speaker 1: everything was sort of based on real science, right. I
- 5:47Speaker 1: mean all of the technology about getting there and living there,
- 5:50Speaker 1: it's all sort of available technology. That was kind of amazing.
- 5:53Speaker 1: You look like Matt Damon also, actually do you mean
- 5:55Speaker 1: to tell you that? Yeah? Or maybe Matt Damon is
- 5:57Speaker 1: the Martian version of me. That's right, Yeah, Matt Damon
- 6:00Speaker 1: is the Martian horn Hite child. I'm sure he tells
- 6:02Speaker 1: that to everybody, right, That's that's how he introduces themselves.
- 6:07Speaker 1: I'm sure. Yeah, Yeah, there's that fascination with Mars. I
- 6:13Speaker 1: guess it's just kind of our next door neighbor, right,
- 6:15Speaker 1: it's sort of the next planet over. That's not you know,
- 6:18Speaker 1: boiling for being to flow to the Sun. It's just
- 6:20Speaker 1: like the next one over. Yeah, And people have been
- 6:22Speaker 1: looking at Mars for a while because it's so close
- 6:24Speaker 1: and so, you know, telescopes became more available. People started
- 6:27Speaker 1: pointing them at Mars, and pretty early on they saw
- 6:30Speaker 1: some interesting stuff, which led to crazy speculation. You know,
- 6:33Speaker 1: people saw lines on Mars that corresponded to what they
- 6:36Speaker 1: thought were canals, which they thought was evidence of like civilization.
- 6:40Speaker 1: And that's pretty exciting, right, And I like to imagine
- 6:43Speaker 1: what was it like to be those people. You're you know,
- 6:45Speaker 1: you're looking at the neighboring planet for the first time.
- 6:47Speaker 1: You could see anything, right, you could see like huge
- 6:50Speaker 1: civilizations and airships and all sorts of crazy stuff, or
- 6:54Speaker 1: you could see nothing but dust and rubble. I mean
- 6:56Speaker 1: that moment when you first get get a bide at
- 6:59Speaker 1: a scientific apples really exciting time. And so for them
- 7:02Speaker 1: to look through those telescopes and see something that looks
- 7:05Speaker 1: like civilization, that must have been pretty exciting. Yeah. I mean,
- 7:09Speaker 1: it's maybe something a lot of people don't know, is
- 7:10Speaker 1: that you can go out in a typical night and
- 7:13Speaker 1: look out into the sky and see Mars like you
- 7:16Speaker 1: can see the next planet over. Yeah. Yeah, And not
- 7:18Speaker 1: only can you see you can see its color. Right,
- 7:20Speaker 1: It's not just like a tiny dot in the sky.
- 7:23Speaker 1: You could see it's reddish, like you are seeing the
- 7:25Speaker 1: surface of another planet. It's incredible. Yeah, that's amazing. So
- 7:29Speaker 1: I thought, before we would dig into this idea of
- 7:32Speaker 1: life and Mars, I thought it'd be cool to just
- 7:33Speaker 1: kind of um talk a little bit about some facts
- 7:36Speaker 1: about Mars. So it did some extensive research online or
- 7:40Speaker 1: does that mean you just looked at Wikipedia. Yeah, uh, well,
- 7:44Speaker 1: I thought it was cool that Mars is about only
- 7:47Speaker 1: about half of the diameter of Earth. It's actually smaller
- 7:50Speaker 1: than Earth, like we are the bigger brother. Yeah, it
- 7:53Speaker 1: got a small scoop of planet stuff. Yeah, that makes
- 7:56Speaker 1: it a lot smaller. And that has consequences because it
- 7:58Speaker 1: means that the gravity on Mars is us Right, you
- 8:00Speaker 1: stand on surface of Mars. That's basically an instant diet
- 8:03Speaker 1: right there. Yeah, you'll weigh less, you can jump, you
- 8:07Speaker 1: can jump higher. Yeah, you can stand on Mars and
- 8:10Speaker 1: eat Mars bars and still you can eat twice as
- 8:13Speaker 1: many um. But it's not just because it's smaller. It's
- 8:17Speaker 1: also less dense, Like it's a planet. It's half the
- 8:21Speaker 1: size of the Earth, but the planet itself, like the rock,
- 8:24Speaker 1: it's less dense. Yeah, it's like fluffier. Yeah, it's fluffier. Yeah. Yeah.
- 8:28Speaker 1: I think that must be connected, right, because the more
- 8:31Speaker 1: stuff there is, the more gravity there is, the more
- 8:34Speaker 1: it gets compressed. Like the interior of the Sun must
- 8:37Speaker 1: be denser than the interior of Jupiter, which must be
- 8:39Speaker 1: denser than the interior of the Earth. Right, So I
- 8:42Speaker 1: think there must be a connection between the size of
- 8:44Speaker 1: the planet and the density of the interior. Oh right, Yeah,
- 8:47Speaker 1: And another interesting fact that read was that Mars does
- 8:50Speaker 1: have an atmosphere. You can go there and there's wind
- 8:53Speaker 1: and there's an atmosphere around it, but it's only about
- 8:57Speaker 1: one percent of the atmosphere we have here. Try. Yeah,
- 9:00Speaker 1: Mars does not have much of an atmosphere, which is
- 9:02Speaker 1: pretty important for supporting life. Yeah, okay, And the last
- 9:06Speaker 1: cool fact I read was that a day on Mars, like,
- 9:08Speaker 1: if you're standing on Mars, a day for you would
- 9:11Speaker 1: last one day in thirty seven minutes. That's right. That's
- 9:15Speaker 1: sounded kind of amazing to me, because you know, the
- 9:17Speaker 1: length of the day on the planet is just determined
- 9:19Speaker 1: by how fast it spins. And you know, these planets
- 9:22Speaker 1: could spin at any speed, and so the fact that
- 9:24Speaker 1: it lasts just about an Earth day, it's spinning it
- 9:28Speaker 1: just about the same speed it's the Earth, right, And
- 9:30Speaker 1: it turns out a lot of the planets you're spinning
- 9:31Speaker 1: it at approximately the same speed. We all sort of
- 9:35Speaker 1: spun out at the same rate. Yeah, but does that
- 9:37Speaker 1: make you like want to go to Mars and imagine
- 9:39Speaker 1: you'll get like an extra few minutes every day. Well,
- 9:42Speaker 1: not only would you weigh less, you would have some
- 9:44Speaker 1: extra climb in your hand every day. Imagine what you
- 9:46Speaker 1: can do with an extra thirty seven minutes every day. Yeah,
- 9:50Speaker 1: the commute, the like nine months each way commute might
- 9:52Speaker 1: be kind of killer though, but no traffic, right, Sometimes
- 9:56Speaker 1: I feel like I'm on the four or five for
- 9:58Speaker 1: nine months anyway. So if you're like, might as well
- 9:59Speaker 1: go to Mars, you know. Cool. So that's that's our
- 10:03Speaker 1: sister planet, and it's sort of the same size. It's
- 10:05Speaker 1: very close by were blue, Mars is red, So there's
- 10:10Speaker 1: sort of the interesting parallel that people think about, right, Yeah,
- 10:13Speaker 1: if you think about where life can exist in the universe,
- 10:15Speaker 1: there are these little slices. You know, you have to
- 10:18Speaker 1: be a certain distance from the Sun in order to
- 10:20Speaker 1: not be broiled on the surface, right, but you can't
- 10:23Speaker 1: be too far away. It's because you can't be too cold.
- 10:25Speaker 1: You have to have liquid water, and so there's these
- 10:28Speaker 1: narrow regions around each star. They call it the habitable
- 10:31Speaker 1: zone where liquid water can exist on the surface, and
- 10:34Speaker 1: Earth certainly in it. And Mars is right there, you know,
- 10:36Speaker 1: like there's not that much in the Solar System. Aren't
- 10:39Speaker 1: that many planets inhabitable zone, and so Mars is a
- 10:41Speaker 1: great candidate. Yeah, so it's it's sort of it's warm
- 10:44Speaker 1: and bombing, and it's not sort of extreme like some
- 10:47Speaker 1: of these other planets, right, Like, if you go to
- 10:49Speaker 1: Venus or Mercury or Jupiter, you would just die instantly.
- 10:53Speaker 1: What don't you that's right. I wouldn't call Mars warm
- 10:55Speaker 1: and bombing unless you have in charge of the advertising
- 10:58Speaker 1: for Martian vacations. It's definitely cold, Okay, Mars is sub freezing, right,
- 11:02Speaker 1: package jacket folks, and don't bring your swimsuit because Mars
- 11:06Speaker 1: is subfreezing. But on the scale of like you know,
- 11:09Speaker 1: Pluto or Jupiter or whatever, it's definitely warm and bomby.
- 11:12Speaker 1: So from that perspective, I think we're legally allowed to
- 11:15Speaker 1: say that. What I mean is that we can imagine
- 11:18Speaker 1: ourselves being there and visiting and not dying instantly. Absolutely,
- 11:23Speaker 1: humans with appropriate life support could exist on the surface
- 11:25Speaker 1: of Mars. What's fascinating is that the service of Mars
- 11:29Speaker 1: today is cold and sub freezing and very thin atmosphere.
- 11:32Speaker 1: But it didn't used to be that way. In fact,
- 11:35Speaker 1: Mars a long time ago used to be much more
- 11:38Speaker 1: like Earth. It used to be a you know, it
- 11:40Speaker 1: would be an excellent candidate for life billions of years ago. Wow, Okay,
- 11:45Speaker 1: let's hear more about that. But first let's take a
- 11:47Speaker 1: quick break. So you're saying that at some point Mars
- 12:03Speaker 1: was a lot different than it is now, like it
- 12:05Speaker 1: was more hospitable to life, Like it was actually sort
- 12:09Speaker 1: of more closer to what Earth looks like. Now, that's right.
- 12:12Speaker 1: We think based on evidence we see on the surface
- 12:15Speaker 1: of Mars now, you know, like the way the rocks
- 12:17Speaker 1: look and and the geological patterns, that Mars used to
- 12:21Speaker 1: be much more like Earth, almost covered with oceans like
- 12:24Speaker 1: there used to be huge amounts of liquid water on
- 12:26Speaker 1: the surface of Mars. Estimates vary from between thirty to
- 12:30Speaker 1: seventy of the surface of Mars used to be covered
- 12:32Speaker 1: in water like Us, just like Earth. Right, So Mars
- 12:36Speaker 1: would have been kind of a blue planet, not a
- 12:38Speaker 1: red planet, billions of years ago. And in addition, it
- 12:41Speaker 1: had a rich atmosphere much more than it does today.
- 12:45Speaker 1: And the atmosphere is key because an atmosphere is like
- 12:47Speaker 1: a blanket for a planet. I mean, you know that
- 12:49Speaker 1: emitting gases into our atmosphere is what's causing global warming. Well,
- 12:53Speaker 1: if you don't have any atmosphere at all, you can't
- 12:55Speaker 1: keep any heat near the surface. So you need some
- 12:57Speaker 1: sort of atmosphere just to trap the sunlight, you know,
- 12:59Speaker 1: to accumulate some heat and to prevent yourself from being
- 13:02Speaker 1: basically as cold as outer space. To Mars a long
- 13:05Speaker 1: time ago had a pretty robust atmosphere, which meant the
- 13:07Speaker 1: surface temperature was enough for liquid water, for example. So
- 13:11Speaker 1: that's a big difference. It just had this thin layer
- 13:14Speaker 1: of gas and that sort of protects acts like a shield,
- 13:18Speaker 1: like a bubble that lets you have liquid water on
- 13:21Speaker 1: the surface. Yeah, and it protects you against a lot
- 13:23Speaker 1: of stuff. Not only does it keep you warm, but
- 13:25Speaker 1: it prevents impacts from asteroids and meteors and stuff like that,
- 13:28Speaker 1: because when they hit the Earth, it's sort of like
- 13:30Speaker 1: an elfin hitting a water bed or something. It creates
- 13:33Speaker 1: a big splash in the atmosphere instead of getting all
- 13:35Speaker 1: the way down to the ground, right, and it probably
- 13:38Speaker 1: hurts too. Yeah. I think elephants like jumping on water
- 13:42Speaker 1: and what you're talking about. UM, But no, atmospheres are
- 13:45Speaker 1: very important, UM. For sustaining life, I mean life needs
- 13:48Speaker 1: to breathe, right, and also for keeping the temperature warm
- 13:51Speaker 1: enough and for protecting yourself against impact from from rocks
- 13:55Speaker 1: from space. So so marts you usually have these huge
- 13:57Speaker 1: oceans and sort of an atmosphere is like we do,
- 14:00Speaker 1: probably clouds, you know, beaches, um. So that's why we
- 14:04Speaker 1: think that maybe there could have been life. That's right,
- 14:07Speaker 1: as far as we know from a biological point of view, right,
- 14:09Speaker 1: what does it take to make life? Well, it takes
- 14:13Speaker 1: basic organic molecules, and those exist on Mars today, so
- 14:16Speaker 1: we're sure that they existed a long time ago. It
- 14:18Speaker 1: takes liquid water, right, it takes an energy source meaning
- 14:22Speaker 1: the sun um. And we don't really know what else
- 14:25Speaker 1: it takes. I mean, you can't have too many toxins,
- 14:27Speaker 1: you can't be blasted by radiation. Um. But we don't
- 14:31Speaker 1: really know. The deep question about in biology right now
- 14:34Speaker 1: is if you have all that stuff and you let
- 14:37Speaker 1: it sort of smooth around for millions of years or
- 14:39Speaker 1: billions of years, how often do you get life? You know,
- 14:42Speaker 1: is it one in a trillion, or is it every
- 14:45Speaker 1: other time? Or is it Planets that have that condition
- 14:48Speaker 1: eventually get microbial life we just don't know the answer.
- 14:51Speaker 1: It's like somebody makes the same ingredients we had here
- 14:53Speaker 1: in Earth, and the question is did little micro's pop
- 14:56Speaker 1: up in the middle of it? That's right, and you know,
- 14:58Speaker 1: my instinct is that it must have. And one piece
- 15:00Speaker 1: of evidence we have is that on Earth, it seems
- 15:02Speaker 1: like life started pretty soon after those conditions formed. You know,
- 15:07Speaker 1: once we had an atmosphere and the liquid water and
- 15:09Speaker 1: the temperature is about right, it didn't take very long
- 15:12Speaker 1: for life to start. So that suggests that it's not
- 15:14Speaker 1: like a one in a bazillion chance and millions of
- 15:18Speaker 1: years you suggests that, you know, it's likely to happen. Yeah,
- 15:22Speaker 1: think about all the molecules in an ocean, right, all
- 15:25Speaker 1: the organic molecules bumping against each other. You might think
- 15:28Speaker 1: it's so improbable for it to bump into each other
- 15:31Speaker 1: and form RNA and that something that would happen to
- 15:33Speaker 1: be self replicating and build from there. Yeah, it's improbable,
- 15:36Speaker 1: but you've got tend to the you know, huge number
- 15:39Speaker 1: of atoms bumping against each other for millions of years.
- 15:42Speaker 1: That's a lot of tries, right. If it's like you know,
- 15:45Speaker 1: monkeys on a typewriter banging away. Eventually one of them
- 15:47Speaker 1: is going to produce Hamlet. Yeah, it's a good picture
- 15:50Speaker 1: of of of a creator for the universe. Get a
- 15:54Speaker 1: bunch of monkeys banging molecules around. Oh look, i'mde Dna,
- 15:59Speaker 1: the creator. Sometimes it does seem like a like an
- 16:01Speaker 1: idiot monkey. Yeah, I agree. Welcome to blasphemy by Jorhand Daniel.
- 16:08Speaker 1: So that's kind of why we think that maybe there
- 16:10Speaker 1: could have been life because it looked just like the Earth.
- 16:12Speaker 1: It had the right conditions, but then all of that
- 16:15Speaker 1: went away at some point because the Mars we see
- 16:17Speaker 1: now it looks like a big, big old desert. Yeah,
- 16:20Speaker 1: that's why we think that Mars was a great laboratory
- 16:23Speaker 1: for answering this question. Right, If life existed on Mars
- 16:27Speaker 1: billions of years ago, when the conditions were great, that
- 16:29Speaker 1: tells you a lot about the chances for life to start.
- 16:32Speaker 1: If life didn't exist on Mars billions of years ago,
- 16:35Speaker 1: that tells you a lot about the chances for life
- 16:37Speaker 1: to start. Right. But as we alluded earlier in the podcast,
- 16:41Speaker 1: we don't actually know if life started on Mars or
- 16:44Speaker 1: life started on Earth. Right, it could have started in
- 16:47Speaker 1: either place. We should talk about that before we talk
- 16:49Speaker 1: about the great disaster of Mars. You mean, like, so
- 16:54Speaker 1: Mars used to look like Earth. Maybe life started there
- 16:56Speaker 1: and somehow made it over here exactly, And so you
- 17:00Speaker 1: might be thinking, Hold at a second, how could microbial
- 17:03Speaker 1: life like build a spaceship, launch it and come over
- 17:06Speaker 1: to Earth. That's ridiculous, right, Why is that ridiculous? Well,
- 17:10Speaker 1: I don't know. Bacteria don't seem to build technology, or
- 17:12Speaker 1: develop space ships or launched themselves into space very often.
- 17:15Speaker 1: I mean, not that we're aware of. Bacteria are secretly
- 17:19Speaker 1: exploring the universe. We don't little tiny rocket ships. Yeah,
- 17:22Speaker 1: but actually it happens, and it happens sort of accidentally.
- 17:25Speaker 1: And the way it happens is that you could have
- 17:27Speaker 1: like a piece of life, you know, a little bit
- 17:29Speaker 1: of bacteria on a rock, and that rock you get
- 17:32Speaker 1: knocked into space by the impact of an asteroid. So
- 17:35Speaker 1: you know, rock number one, come from space, blast onto
- 17:39Speaker 1: the plane, a huge explosion. Stuff flies everywhere. Some of
- 17:42Speaker 1: that stuff flies into outer space. Right. You can knock
- 17:46Speaker 1: a rock off the surface of a planet if you
- 17:48Speaker 1: hit it hard enough, and it would just go out
- 17:50Speaker 1: into space, float around the Solar System and land in
- 17:53Speaker 1: our planet. Yeah, and not all of them, of course,
- 17:55Speaker 1: would land on our planet. Most of them would just
- 17:57Speaker 1: float in space forever. But occasionally some of them will it.
- 18:00Speaker 1: And we know that this happens, like, for a fact,
- 18:03Speaker 1: we have rocks that we found on Earth that we
- 18:06Speaker 1: are sure came from Mars, so we know that this
- 18:09Speaker 1: is a thing. Wait, how do how do we know
- 18:10Speaker 1: they're from Mars? Do they have a little like a
- 18:12Speaker 1: made in Mars? It's the return postmark. Of course, it's
- 18:15Speaker 1: not so complicated. Um No, we can look at it,
- 18:18Speaker 1: the chemistry of it and the geology of it, and
- 18:20Speaker 1: they're just totally different from Earth rocks, and there's completely
- 18:23Speaker 1: consistent with what we think Mars rocks look like. And
- 18:25Speaker 1: you know, we've sent um robots to Mars. We've studied them,
- 18:29Speaker 1: so we know something about Martian geology and these rocks
- 18:32Speaker 1: just could not have formed on Earth and they're totally
- 18:34Speaker 1: consistent with rocks forming on Mars. So we have in
- 18:38Speaker 1: our labs rocks from Mars, right Like, we haven't been there,
- 18:41Speaker 1: but we already have pieces of it. So it's possible
- 18:45Speaker 1: that maybe you know, there was a little microbe who
- 18:47Speaker 1: went to sleep at night in his little rock or
- 18:49Speaker 1: her rock home. Something happened and the next day here
- 18:53Speaker 1: she woke up on Earth. Yeah that's right, probably the
- 18:56Speaker 1: next thousands of years. But you know, and microbes can
- 18:59Speaker 1: live along time and they can just go to sleep,
- 19:02Speaker 1: and a lot of them can survive crazy things. I mean,
- 19:05Speaker 1: there are microbes living on the outside of the International
- 19:07Speaker 1: Space Station right now. It's almost impossible to eradicate all
- 19:12Speaker 1: life from anything. I mean, you zap it with radiation,
- 19:14Speaker 1: you'll find a few microbes that are radiation hard. You
- 19:17Speaker 1: heat them up. You'll find some microbes that really like
- 19:20Speaker 1: it hot and dry them out. You'll find microbes that
- 19:23Speaker 1: can live in dry environments. It's crazy. So someone could
- 19:26Speaker 1: have survived the impact of an asteroid thrown into space,
- 19:29Speaker 1: surviving the cold and vacuum, survived the entry into Earth,
- 19:33Speaker 1: and then come out and be like, hey, this is
- 19:35Speaker 1: my new house. That's right. That thing has a great backstory.
- 19:38Speaker 1: Let me tell you there was a moment about what
- 19:41Speaker 1: is it now, twenty years ago when NASA thought they
- 19:44Speaker 1: actually had discovered evidence of life from a Martian rock,
- 19:48Speaker 1: right like a rock that came from Mars with evidence
- 19:50Speaker 1: of life in it. This was a pretty exciting moment.
- 19:53Speaker 1: People freaked out. Yeah, because NASA went and gave a
- 19:57Speaker 1: press release and said, we have this rock we're pretty
- 19:59Speaker 1: sure came from Mars, and when we cut it open,
- 20:02Speaker 1: we found these things in it that we think could
- 20:04Speaker 1: only be explained by life. They were these tiny little
- 20:07Speaker 1: shapes that looked like bacteria. They were much smaller than
- 20:10Speaker 1: Earth bacteria, but you know, you could imagine maybe this
- 20:13Speaker 1: is what life looks like on Mars. And so they
- 20:15Speaker 1: were pretty excited about it. But then what happened They
- 20:19Speaker 1: discovered that it was not actually microft tracks. Yeah. Well,
- 20:23Speaker 1: the scientists who suggested it, they still believed that it
- 20:26Speaker 1: was evidence for life, and to them it was the
- 20:28Speaker 1: most compelling story. But you know, in science, a pretty
- 20:31Speaker 1: big claim requires pretty big evidence, right, And so other
- 20:34Speaker 1: people dug into it and they came up with explanations
- 20:36Speaker 1: for how you could form those shapes using non organic
- 20:40Speaker 1: um processes, you know, just geological processes. Crystal formation could
- 20:44Speaker 1: give you this, and this kind of geology could give
- 20:47Speaker 1: you that, and so the rock could just naturally have
- 20:50Speaker 1: these formations. Yeah, they found plausible ways to make the
- 20:52Speaker 1: same thing without having to have microbial life. Yeah, which
- 20:56Speaker 1: is a bit of a bummer. It's a bummer that
- 20:58Speaker 1: we're not Martians. Well, it's a bum to not have
- 21:00Speaker 1: discovered life on Mars. I mean, that would be an
- 21:02Speaker 1: incredible moment, right to know that there was life on
- 21:05Speaker 1: another planet. But of course it still wouldn't answer the question.
- 21:08Speaker 1: Even if you found a rock with life from Mars
- 21:11Speaker 1: on it, you still wouldn't know did life come to
- 21:13Speaker 1: Earth from Mars, because then you've established that there's a
- 21:16Speaker 1: transport mechanism, or did it start on Earth and then
- 21:19Speaker 1: go to Mars and then come back, right, It wouldn't
- 21:22Speaker 1: answer that question. Yeah, but there's still also just the possibility.
- 21:25Speaker 1: I mean, they've proven that you can make these formations
- 21:27Speaker 1: some other ways, but that doesn't mean that necessarily that
- 21:30Speaker 1: those were not made by microbes. Right. It could be
- 21:32Speaker 1: that we're looking at evidence of life on Mars. We
- 21:35Speaker 1: just can't prove it, right, That's the problem is. And
- 21:38Speaker 1: before you're going to accept that, you really got to
- 21:40Speaker 1: have pretty solid evidence. You've gotta have something which is
- 21:43Speaker 1: unique to life, right, And so before you're going to
- 21:46Speaker 1: believe that there really is life or was life on Mars,
- 21:49Speaker 1: I think you gotta really see it. You gotta get there.
- 21:51Speaker 1: You gotta get some in your hands. You gotta life,
- 21:53Speaker 1: you know, play with it, see it move. You gotta
- 21:55Speaker 1: really be convinced. Chickens papers. Make sure it came from
- 22:00Speaker 1: birth certificate, you know, social Security number exactly. So we
- 22:08Speaker 1: think there might have been life on Mars a long, long
- 22:10Speaker 1: long time ago, right, And Mars used to look really different. Yeah,
- 22:13Speaker 1: it was more fertile, it was more sort of prone
- 22:16Speaker 1: to have life, that's right. Yeah it was. It was
- 22:18Speaker 1: a happy place to be, but not anymore. And the
- 22:21Speaker 1: thing that happened is that Mars lost its atmosphere. Something
- 22:26Speaker 1: happened that made it all sort of proof away. Yeah.
- 22:28Speaker 1: The atmosphere, the thing that would keep the surface warm
- 22:31Speaker 1: and have to have liquid water and you know, provide
- 22:34Speaker 1: the nutrients that life would need. That atmosphere got blown
- 22:37Speaker 1: away by the solar wind. See, on Earth, we have
- 22:40Speaker 1: an atmosphere, and our atmosphere is protected from the solar wind.
- 22:43Speaker 1: The solar wind is just like a huge flow of
- 22:45Speaker 1: radiation from the Sun. The thing that protects us from
- 22:48Speaker 1: the solar wind is our magnetic field, right. Mostly the
- 22:52Speaker 1: solar wind is charged particles being shot at us from
- 22:54Speaker 1: the Sun. But charged particles get bent in magnetic field,
- 22:57Speaker 1: and so our magnetic field mostly deflects them, and some
- 23:00Speaker 1: of them spiral down. And that's what you see in
- 23:01Speaker 1: the northern lights, right, is all these charged particles hitting
- 23:04Speaker 1: the atmosphere. It's like the Sun is shooting a giant
- 23:07Speaker 1: death ray at us. But we have some sort of
- 23:10Speaker 1: force field basically, right, we have like a special force
- 23:12Speaker 1: field that deflects it. Yeah. Literally, the Sun is the
- 23:15Speaker 1: death Star's fully operational and it's blasting us all the time.
- 23:21Speaker 1: And if we didn't have the magnetic field, then yeah,
- 23:24Speaker 1: we'd be in trouble because it would slowly eat away
- 23:27Speaker 1: at our atmosphere, would just strip it away, which is
- 23:30Speaker 1: blast walled our oxygen and air, and we'll be totally
- 23:33Speaker 1: exposed to those rates exactly, and then the temperature on
- 23:36Speaker 1: Earth would plummet and all of that stuff. And that's
- 23:38Speaker 1: what happened to Mars. We don't know why, just like
- 23:40Speaker 1: we don't have a great understanding of why Earth has
- 23:42Speaker 1: a magnetic field and why it flips. And you know,
- 23:44Speaker 1: we should do a podcast on that another time. But Mars,
- 23:48Speaker 1: we think had a magnetic field, which is why it
- 23:49Speaker 1: had an atmosphere, and then it lost it and it
- 23:52Speaker 1: might have been that it just cooled down and whatever
- 23:55Speaker 1: was happening inside Mars that you know, gyro magnetism that
- 23:58Speaker 1: created the magnetic field inside Mars just sort of stopped
- 24:02Speaker 1: and it lost its magnetic field, which means it lost
- 24:04Speaker 1: its its shield from the death star, which means it
- 24:06Speaker 1: lost its atmosphere dot dot dot, and then it got
- 24:10Speaker 1: blasted by the death ray from the Sun. And it
- 24:13Speaker 1: is what it is today, which is pretty barren and inhospitable, right, yeah,
- 24:17Speaker 1: And so it has an atmosphere today like you were saying,
- 24:19Speaker 1: but it's really thin, right. There's hardly any gas surrounding Mars,
- 24:23Speaker 1: so there's not enough to keep the surface warm. Right,
- 24:25Speaker 1: So if you go to Mars today, you wouldn't recognize
- 24:28Speaker 1: it from billions of years ago. You know, if if
- 24:30Speaker 1: life started on Mars and came to Earth and then
- 24:31Speaker 1: wanted to go home, it would be like, this is
- 24:33Speaker 1: not the Mars. I know, what have you done? Who
- 24:38Speaker 1: turned off the magnetic field? No, it's totally it's a
- 24:44Speaker 1: post apocalyptic healthscape I'm compared to what it used to
- 24:46Speaker 1: look like. But there could still be life there now, right,
- 24:50Speaker 1: That's right. We have not ruled out the possibility that
- 24:52Speaker 1: there could still be somehow life surviving on the surface, because,
- 24:55Speaker 1: as we said earlier, life finds a way to survive.
- 24:58Speaker 1: You know, once you have a planet that's just covered
- 25:01Speaker 1: in gazillions of microbes, they have a huge diversity, and
- 25:04Speaker 1: even in an enormous cataclysm, it's almost impossible to wipe
- 25:07Speaker 1: them out completely. Some of them will survive. And so
- 25:10Speaker 1: even though Mars lost its its magnetic field, it may
- 25:13Speaker 1: mean that there's no more life on the surface, right,
- 25:15Speaker 1: because it's no more liquid water on the surface, But
- 25:17Speaker 1: there could still be life on Mars. Right. What does
- 25:20Speaker 1: life need? It needs water, it needs nutrients, it needs um,
- 25:24Speaker 1: you know, not a whole lot of toxins. It needs
- 25:26Speaker 1: protection from radiation, some sort of a heat source, right,
- 25:29Speaker 1: A little bit of warmth, yeah, a little bit of warmth,
- 25:32Speaker 1: but you know, not too much, just enough to have
- 25:34Speaker 1: your water be liquid basically, and you know, a huge
- 25:36Speaker 1: caveat Somebody out there is probably thinking, hold on a second,
- 25:39Speaker 1: they're just talking about Earth like life, right, life like
- 25:43Speaker 1: it lived, like it exists on Earth. Whoever, you are
- 25:46Speaker 1: out there driving in your car thinking that we're totally crazy,
- 25:48Speaker 1: You're right, We're talking about Earth like life, because that's
- 25:52Speaker 1: the only life we know, and there's a possibility that
- 25:54Speaker 1: life could exist in completely different forms, you know, that
- 25:57Speaker 1: doesn't require liquid water and operates on geology called time
- 26:00Speaker 1: scales and frozen water. But you know, we're gonna have
- 26:02Speaker 1: to put that aside because it's so alien we can't
- 26:04Speaker 1: even really explore it or consider it or discover it. Right,
- 26:08Speaker 1: So for now, let's just think about earthlike life. Yeah, well,
- 26:11Speaker 1: let's talk about what we know about Mars and what
- 26:13Speaker 1: we can see today. But first let's take a quick break, okay, Daniel,
- 26:30Speaker 1: So what do we know about Mars today? Like, what
- 26:32Speaker 1: can we see that might lead us to believe there
- 26:34Speaker 1: are microbes or maybe little green men hiding hiding under
- 26:38Speaker 1: the surface that we can't see. Oh I wish they
- 26:40Speaker 1: were a little green men hiding onto the surface of Mars.
- 26:42Speaker 1: That would be amazing, right, what a discovery that would be. Well,
- 26:45Speaker 1: I know there's robots on the surface of Mars. There
- 26:48Speaker 1: are a few robots driving around Mars, but those are
- 26:50Speaker 1: Earth robots, Um there are I love these cartoons that
- 26:54Speaker 1: show like little green men hiding behind rocks to the
- 26:58Speaker 1: cameras from the rowers, right, like they're there, they're just
- 27:01Speaker 1: camera shy, yeah exactly. But you know, we have more
- 27:04Speaker 1: than just robots driving on the surface. We also have
- 27:06Speaker 1: satellites orbiting Mars and imaging surface and comparing the picture
- 27:10Speaker 1: today to yesterday. And so we're looking, Yeah, we're looking
- 27:13Speaker 1: if anything moved on the surface of Mars, and we
- 27:14Speaker 1: would notice, you know, it would not be hard to
- 27:17Speaker 1: spot some sort of activity. So we don't see any
- 27:20Speaker 1: movement or structures built by any civilizations or it just
- 27:24Speaker 1: looks like a big red rock. Yeah. What we see
- 27:27Speaker 1: our structures that look like you know, water flow canals
- 27:30Speaker 1: and geological formations, and so there's some activity on Mars,
- 27:34Speaker 1: but none of it seems to be like due to life. Absolutely.
- 27:38Speaker 1: So there's no large macroscopic life on Mars, which is
- 27:41Speaker 1: a bummer, you know, because that would have been awesome.
- 27:43Speaker 1: Um and you know, maybe Martian scientists could have tossed
- 27:46Speaker 1: the secrets of the universe, but that's not in the cards,
- 27:49Speaker 1: right that we can see, Right, that's kind of key.
- 27:52Speaker 1: On the surface, there aren't any that we can see.
- 27:54Speaker 1: But but it's hard to imagine though, like a technological
- 27:57Speaker 1: civilization living under the surface of Mars, and no presence
- 28:01Speaker 1: on the surface. I mean, imagine that was you. Right,
- 28:03Speaker 1: you have a civilization on the surface of Mars. It's thriving,
- 28:06Speaker 1: it's exciting. You know, life is good. You have you know,
- 28:08Speaker 1: fun plans on the weekend. All of a sudden, you
- 28:10Speaker 1: lose your magnetic field. The atmosphere starts stripping away, the
- 28:13Speaker 1: temperatures plummeting. You decided to go underground. Right, Still, you're
- 28:16Speaker 1: gonna want to have something on the surface to collect,
- 28:19Speaker 1: like solar power or something. Right, You're gonna leave some
- 28:22Speaker 1: evidence on the surface of the fact that we used
- 28:24Speaker 1: to be there. We see nothing, just natural rock. Yeah,
- 28:28Speaker 1: it's a fun concept for somebody's science fiction novel that
- 28:30Speaker 1: there could be today technological civilizations on the inside of Mars.
- 28:34Speaker 1: But I put it on a pretty low probability. Um,
- 28:37Speaker 1: but there is the possibility that microbial life could have
- 28:41Speaker 1: survived underground, so there could be an inside of the
- 28:45Speaker 1: rock instead of the dirt in Mars. There could be little,
- 28:49Speaker 1: little green microbes. Yeah. And the reason that we think
- 28:52Speaker 1: that the real possibility is that NASA has discovered water
- 28:55Speaker 1: on Mars. Liquid water, so not on the surface, because
- 28:59Speaker 1: on the surface is so cold that if you like
- 29:00Speaker 1: if you spat it would freeze in a crystal before
- 29:03Speaker 1: it hit the ground, right or evaporate right or evaporate
- 29:05Speaker 1: probably is probably more more realistic. But under the ground
- 29:09Speaker 1: it's warmer and it's protected from you know, all sorts
- 29:11Speaker 1: of radiation, etcetera, etcetera. And they found evidence of a lake,
- 29:16Speaker 1: huge lake of liquid water underground. But it's like a
- 29:20Speaker 1: mile underground. It's not like just under the surface. It's deep,
- 29:23Speaker 1: deep underground. How did they see it? How did they
- 29:26Speaker 1: know it's there? Yeah, they can see it by studying,
- 29:28Speaker 1: by using radar, I think. So they have ground penetrating
- 29:31Speaker 1: radar and all sorts of clever stuff to see what's
- 29:33Speaker 1: under the rock. So there could be like martian dolphins
- 29:37Speaker 1: swimming around in there in these caves. It'd be pretty dark.
- 29:41Speaker 1: I don't know how dolphins would survive and what they
- 29:43Speaker 1: would eat. I think much more likely is that there's
- 29:46Speaker 1: martian microbes right whatever. However, life started billions of years
- 29:50Speaker 1: ago could have survived on Mars. In turn, in these
- 29:53Speaker 1: lakes that are underground. Because there's liquid water, the ground
- 29:57Speaker 1: itself protects them from the radiation of the sun right
- 29:59Speaker 1: at the prays and so as long as they can
- 30:02Speaker 1: find some nutrients. And um, you know my wife, she's
- 30:04Speaker 1: a biochemist. She's always telling me that microbes can eat anything. Right,
- 30:09Speaker 1: there's nothing, no situation in which microbes can't find something
- 30:12Speaker 1: to extract energy from. Right. It's the opposite of children.
- 30:15Speaker 1: They won't eat anything. That's why I keep telling it.
- 30:19Speaker 1: We should have had microbes for kids and feed if
- 30:25Speaker 1: only I know, I know. Um. And there's also other
- 30:29Speaker 1: exciting information, like we actually have some clues that suggest
- 30:33Speaker 1: that there's life on Mars, not just the possibility. Oh
- 30:36Speaker 1: there's water, so there further could be there are other
- 30:38Speaker 1: things you can do look for life on Mars, which
- 30:40Speaker 1: is to look for biomarkers. Like if life exists, then
- 30:43Speaker 1: it has to have some sort of metabolism. Right, there's
- 30:45Speaker 1: like a process there. You know, it's eating something, it's
- 30:48Speaker 1: pooping something like their breath. Yeah there, yeah, exactly. And
- 30:52Speaker 1: so what we've done is we've looked at the atmosphere
- 30:55Speaker 1: of Mars and we've seen methane in the atmosphere. The
- 30:58Speaker 1: methane is not long lived, and so if you see
- 31:00Speaker 1: in the atmosphere, it means it was produced fairly recently.
- 31:03Speaker 1: But I mean it's not long lived like it it
- 31:05Speaker 1: goes away and it disappears. It breaks down. Yeah, it's
- 31:08Speaker 1: not stable. It breaks down the atmosphere under under sunlight
- 31:11Speaker 1: interaction with other things. Now, so we see these sort
- 31:13Speaker 1: of clouds methane appear and then they break down. So
- 31:17Speaker 1: something must be making this methane. Yeah, And there's some
- 31:20Speaker 1: explanations just you know that are that don't involve life,
- 31:23Speaker 1: like volcanic activity or whatever whatever. But the interesting thing
- 31:26Speaker 1: is that the methane produced on Mars varies with the seasons,
- 31:30Speaker 1: and so like you know, it's more in one season
- 31:33Speaker 1: and less in another season. Like you know, it's a
- 31:35Speaker 1: lot more in the summer and less in the winter.
- 31:37Speaker 1: And that suggests it's very suggestive of some sort of
- 31:40Speaker 1: biological process, right, as these things like sleep during the
- 31:43Speaker 1: winter and then wake up in the summer and eat
- 31:45Speaker 1: and fart a lot, because man, that's what methane is, right.
- 31:48Speaker 1: You'd be there and be like, m hmm, it's farting season.
- 31:53Speaker 1: Somehow in this podcast we always end up coming back
- 31:55Speaker 1: to farts. We should have called this for podcast farts
- 31:58Speaker 1: in science. Yeah, but our farts Mars called Mars. They're
- 32:02Speaker 1: called farshions. Um, so that's pretty tantalizing evidence, right, That
- 32:08Speaker 1: sells there's something going on that produces methane on a
- 32:11Speaker 1: seasonal scale. And it could just be volcanic activity that's
- 32:14Speaker 1: triggered by the Sun. There are some it could be
- 32:16Speaker 1: Mars itself, it's farting. It could be like the planet
- 32:19Speaker 1: is farting, like releasing we are smelling Mars's buttle exactly.
- 32:24Speaker 1: That could be the scenario. I think he went too farther.
- 32:27Speaker 1: I think they might have to edit that one out. Well.
- 32:34Speaker 1: I like this idea that you brought up the other day,
- 32:36Speaker 1: which is that, um, you know, we're sending these robots
- 32:39Speaker 1: to Mars, and you know, we try to clean in
- 32:40Speaker 1: them and clean them and disinfect them, but it could
- 32:43Speaker 1: be that we're accidentally sending life to Mars with these robots. Yeah,
- 32:48Speaker 1: almost certainly actually, because it's almost impossible to completely clean something.
- 32:53Speaker 1: Right you build on Earth, it's going to be covered
- 32:55Speaker 1: in Earth microups. I mean, they developed like special sprays
- 32:58Speaker 1: to disinfect this stuff, like super kill everything sprays, and
- 33:02Speaker 1: they sprayed on these satellites and then they discover, oh,
- 33:04Speaker 1: there's a kind of bug on these satellites that eats
- 33:07Speaker 1: that spread. It's like, I'm young, give me more, right,
- 33:11Speaker 1: So it's it's and you can shoot it with radiation.
- 33:14Speaker 1: You can do everything you like. It's almost impossible, which
- 33:17Speaker 1: means that when we send something to Mars, these rovers,
- 33:20Speaker 1: we are sending life to Mars. So is there life
- 33:22Speaker 1: on Mars? Well, almost certainly an earth microbe was sent there. Yes,
- 33:26Speaker 1: did it survive? Could it? Could it reproduce? Has it
- 33:29Speaker 1: like tainted Mars is going to colonize Mars and by
- 33:32Speaker 1: the time we get over there, it's gonna be covered
- 33:34Speaker 1: in Earth microbes. I don't think so, but you know
- 33:37Speaker 1: we It sort of muddles the question. And it's actually
- 33:39Speaker 1: zones on Mars where you're not allowed to send probes
- 33:42Speaker 1: because they're trying to keep it free from contamination. Wow.
- 33:45Speaker 1: So that's a huge twist. I mean, the answer to
- 33:47Speaker 1: the question is their life and Mars. You would think
- 33:50Speaker 1: it would be no, but the answer is yes, and
- 33:53Speaker 1: we put it there. I don't know that we can
- 33:55Speaker 1: say confidently if there are microbes on the surface of
- 33:57Speaker 1: those rovers, but I wouldn't bet against it. Yeah, I
- 34:00Speaker 1: wouldn't bet against it. So let me get to say
- 34:01Speaker 1: this is a total possibility life started on Mars a
- 34:04Speaker 1: long time ago, came to Earth through some freak asteroid accident,
- 34:09Speaker 1: evolved into us. We build robots and rocket chips, and
- 34:13Speaker 1: they put life back on Mars after there was this
- 34:15Speaker 1: apocalypse there. Yeah, and maybe that was their whole plan.
- 34:18Speaker 1: They saw this apocalypse coming and they're like, let's ride
- 34:20Speaker 1: a rock to Earth and then come back in a
- 34:22Speaker 1: billion years, you know, return to Mars. That's the title
- 34:26Speaker 1: of the sci fi novel we're writing. Yeah, And I
- 34:29Speaker 1: just think it's a fascinating question. And if we could
- 34:31Speaker 1: find microbs on Mars, I mean, say we send people
- 34:34Speaker 1: over there, or we get a sample of it, we
- 34:36Speaker 1: dig down a mile to even get a sample and
- 34:38Speaker 1: bring it back, then we could start to answer some
- 34:40Speaker 1: really interesting questions just by studying that life, right, Like,
- 34:43Speaker 1: is it um, RNA and DNA based the way our
- 34:46Speaker 1: life is? Is it similar? If it was totally different,
- 34:49Speaker 1: completely biochemically different, Wow, that would be fascinating because it
- 34:52Speaker 1: would mean there's different ways to build life. If it's
- 34:55Speaker 1: the same, that means either there's only one way to
- 34:58Speaker 1: build life and it happened in parallel and from places,
- 35:00Speaker 1: or it started in one place and went to the
- 35:03Speaker 1: other and man, there's so many amazing threads that you
- 35:05Speaker 1: could unravel if we just had a sample of that
- 35:08Speaker 1: lake from underground on on on Mars. Well, and the
- 35:11Speaker 1: answer in all these cases would be mind blowing. Right,
- 35:14Speaker 1: we're either super unique, we were either Martians, or there
- 35:18Speaker 1: is a totally different way to make life. Yeah, and
- 35:20Speaker 1: the facts are there right like right now, there could
- 35:23Speaker 1: be microbs wiggling around on Mars. And you know, it's
- 35:26Speaker 1: not that hard to get there. We have the technology,
- 35:29Speaker 1: we just lacked sort of the political will. You know,
- 35:31Speaker 1: it's amazing to meet these moments when you have the
- 35:34Speaker 1: technology and all you need to do is get the money,
- 35:36Speaker 1: and you could just buy the answers to deep secrets
- 35:39Speaker 1: about the universe. Right, it cost a few billion bucks
- 35:42Speaker 1: or whatever, but we could do it. If Congress and
- 35:44Speaker 1: the President decided this is important, let's do it, that
- 35:47Speaker 1: you could do it. So we have the opportunity we
- 35:50Speaker 1: could buy this knowledge. We just aren't all right, Well, tonight,
- 35:55Speaker 1: if you go out there and look at the night
- 35:56Speaker 1: s guy, you know, look up in an app of
- 35:59Speaker 1: where Mars is right now, and if you can look
- 36:01Speaker 1: at it at night, so you can go out there,
- 36:03Speaker 1: grab a Mars bars, eat it and look up at
- 36:06Speaker 1: that red planet and and smell it's farts. Yeah, or
- 36:10Speaker 1: turn around and send some farts to Mars and maybe
- 36:13Speaker 1: maybe that's the way they communicate farts is space. On
- 36:21Speaker 1: that note, if you still have a question after listening
- 36:32Speaker 1: to all these explanations, please drop us a line. We'd
- 36:35Speaker 1: love to hear from you. You can find us at Facebook, Twitter,
- 36:38Speaker 1: and Instagram at Daniel and Jorge That's one word, or
- 36:42Speaker 1: email us at Feedback at Daniel and Jorge dot com.