Latest / Stuff You Should Know / Can NASA predict natural disasters?
Transcript
- 0:00Speaker 1: Brought to you by the all New Toyota Corolla. Welcome
- 0:04Speaker 1: to Stuff you should know from House Stuff Works dot com. Hey,
- 0:14Speaker 1: and welcome to the podcast. I'm Josh Clark, and there's
- 0:17Speaker 1: Charles Bryant Chuckers. You might know him. An Sure, there's
- 0:20Speaker 1: a w in there somewhere at sure for the Wayne. Yeah,
- 0:23Speaker 1: named after Wayne coyn Right, No, we talked about that before. Yeah, John, Wayne,
- 0:32Speaker 1: how are you doing. I'm great, man, Um, I am
- 0:37Speaker 1: all over this NASA activity. Oh yeah, yeah, good because
- 0:43Speaker 1: it seems like i'll we hear about NASA these days
- 0:45Speaker 1: is how they're having to shut down uh space programs, Right,
- 0:49Speaker 1: that's the other stuff is cool. Well, that's the impression
- 0:52Speaker 1: I have is that they're kind of taking their um,
- 0:56Speaker 1: their field of vision the mountain to outer space and
- 0:59Speaker 1: turning it planet word towards Earth. Why not, That's where
- 1:02Speaker 1: all the people are that are buying Big Max. Right. Well,
- 1:06Speaker 1: if if space exploration is going private, you got the
- 1:10Speaker 1: Elon Musk's and the Richard Branson's of the world saying
- 1:15Speaker 1: we got this, NASA, you go do something else with
- 1:18Speaker 1: all of your high tech remote sensing equipment, then it
- 1:21Speaker 1: makes sense that NASA would say, Okay, we'll become the
- 1:24Speaker 1: watchdog guardian of the planet. And that's what they've they've become. Plus, also,
- 1:29Speaker 1: if you're the United States using NASA's remote sensing equipment
- 1:33Speaker 1: on Earth, is a dynamite cover for intelligence gathering? Well yeah,
- 1:39Speaker 1: I mean you have all sorts of satellites carrying out
- 1:41Speaker 1: different functions, but really all of them are taking pictures
- 1:45Speaker 1: of the Earth, highly detailed ones too. You want to
- 1:49Speaker 1: know about Russian troops formation as NASA yet of volcano? Sure?
- 1:58Speaker 1: If you want to know what kind of sand way? Uh,
- 2:02Speaker 1: Julian Assange had today, asked NASA, Well, that's NASA. Everyone
- 2:07Speaker 1: knows that what Juna fish is, That what his thing is.
- 2:10Speaker 1: Sure every day, that's how he keeps his white main white.
- 2:14Speaker 1: Him and Michio Kaku. Yeah, the white mullet. Actually it's
- 2:18Speaker 1: not so mellody. It's just more of a main main
- 2:22Speaker 1: for sure. Both of them have a main, a big
- 2:24Speaker 1: helmet of hair. So chuck um. But I guess the
- 2:29Speaker 1: question we've posed today I feel like we need to
- 2:32Speaker 1: answer is can NASA predict natural disasters? I think we
- 2:37Speaker 1: can go ahead and answer and say not yet. Right,
- 2:39Speaker 1: But now that again, they've kind of mothballed space exploration
- 2:45Speaker 1: to an extent. I mean we're still hitting Mars. Yeah, yeah,
- 2:48Speaker 1: we're not. They're not mothballing it, but they're they're they've
- 2:50Speaker 1: reached the point where they're like, Okay, we've got all
- 2:52Speaker 1: this really good equipment, let's start monitoring Earth a little
- 2:55Speaker 1: more because there's a lot of questions we have. Um. Now,
- 2:58Speaker 1: they've reached this point where since the beginning of twenty
- 3:01Speaker 1: one century, they've started conducting missions. They have planned ones
- 3:04Speaker 1: that are just being started now, some that are coming
- 3:08Speaker 1: in the next couple of years, and from all this
- 3:10Speaker 1: data they'll be able to analyze it and start to
- 3:13Speaker 1: be able to predict natural disasters. So they have this
- 3:16Speaker 1: whole like toolbox. I guess if you wanted to go
- 3:19Speaker 1: into like corporate buzz speak of of programs and missions
- 3:23Speaker 1: that they're carrying out that will help them predict natural
- 3:26Speaker 1: disasters pretty soon. That's right, not the low hanging fruit, right,
- 3:31Speaker 1: they're just trying to reach out and play together with
- 3:34Speaker 1: the Earth in the same in the same space, in
- 3:37Speaker 1: the same space. Maybe Java storm boy at the corporate talk, Yeah,
- 3:42Speaker 1: we shunned that at all costs here, Um, all right,
- 3:46Speaker 1: so let's talk about this. We talked about remote sensing.
- 3:49Speaker 1: That is UM basically detecting energy reflecting from something UM
- 3:55Speaker 1: when it's pointed out in space, like when you're looking
- 3:57Speaker 1: for new planets, it's pointed out in space. When you
- 4:01Speaker 1: pointed on Earth, it's a heck of a lot closer, right,
- 4:05Speaker 1: And to get more detail. And they're they're using different
- 4:07Speaker 1: kinds of UM detectors. They're detecting different kinds of energy
- 4:10Speaker 1: I should say, like microwave, radiation, X rays. It's not
- 4:14Speaker 1: just like using your peepers. That information can be translated
- 4:19Speaker 1: into something we use our peepers to look at, but
- 4:21Speaker 1: for they can use this equipment to sense all sorts
- 4:24Speaker 1: of different stuff. Yeah. And like you said, it's UM.
- 4:27Speaker 1: It's like mounted on aircraft or it's part of a
- 4:29Speaker 1: satellite or is a satellite and um, yeah, it's all up.
- 4:33Speaker 1: They're looking back at you right now, yes, the wave. Yeah,
- 4:37Speaker 1: or it's looking at the Earth where we're just the
- 4:40Speaker 1: insignificant tiny specs crawling around on the Earth. Yeah. And
- 4:44Speaker 1: this is this is a kind of a big deal.
- 4:46Speaker 1: You know, it makes sense, it's sensible what they're doing.
- 4:49Speaker 1: It's a smart thing. To do with NASA's department, but
- 4:53Speaker 1: it also really is, um, we're at the threshold of
- 4:57Speaker 1: like a really big change in our understanding of our planet,
- 5:02Speaker 1: you know, Like I think there's kind of a lot
- 5:03Speaker 1: of assumptions that people make about our understanding of the
- 5:06Speaker 1: planet that are just totally incorrect. Like, for example, I
- 5:09Speaker 1: would have guessed that meteorologists and climatologists knew how tropical
- 5:15Speaker 1: storms form. They do not, uh, And from using things
- 5:19Speaker 1: like well, there's actually a project that was carried out
- 5:22Speaker 1: in the summer of two thousand ten UM that was
- 5:25Speaker 1: dedicated to studying this is called grip genesis and rapid
- 5:30Speaker 1: intensification processes. And for a couple of a couple of months,
- 5:36Speaker 1: some NASA scientists flew around on a Gulf Stream jet
- 5:39Speaker 1: and took really precise measurements of what they believed were
- 5:44Speaker 1: the beginnings of tropical storms to see how they form exactly. Yeah,
- 5:48Speaker 1: And the goal with pretty much everything that we're going
- 5:50Speaker 1: to talk about today is early detection. Because you can't
- 5:54Speaker 1: stop a hurricane, you can't stop a volcano or an earthquake.
- 5:58Speaker 1: But like the old saying, that's right, but if you
- 6:01Speaker 1: know it's coming, then you can get people out of
- 6:05Speaker 1: the way. You can thwart some of them to some degree. Yeah,
- 6:08Speaker 1: Like anybody can point to a hurricane be like, oh,
- 6:10Speaker 1: there's a hurricane. By then it's a little too late.
- 6:14Speaker 1: If you can point to the very beginnings the cradle
- 6:17Speaker 1: of the hurricane, the formation of a tropical storm. Now
- 6:21Speaker 1: you're talking about time that you have to warn people,
- 6:23Speaker 1: like you, guys need to get out of here. Yeah.
- 6:26Speaker 1: And there is one really cool program they've had going
- 6:28Speaker 1: since two thousand two called GRACE. There's gonna be a
- 6:32Speaker 1: lot of acronyms today, by the way, the UM the
- 6:37Speaker 1: Gravity Recovery and Climate Experiment, this is my favorite one.
- 6:41Speaker 1: It's it's really cool basically what they're doing. All right, Well,
- 6:44Speaker 1: let's step back a minute. Let's talk about Newton. Okay,
- 6:48Speaker 1: gravity depends on the mass of an object. In the
- 6:51Speaker 1: case of polar ice caps, the mass is changing. So
- 6:55Speaker 1: if the mass is changing, the gravity is changing. Right.
- 6:57Speaker 1: So when when the polar ice caps melt and turn
- 7:01Speaker 1: to water and then flow towards the equator, um they
- 7:06Speaker 1: are often so big that they left it in depression
- 7:10Speaker 1: on the Earth's surface. Once they're gone, that depression could
- 7:14Speaker 1: be filled in the mantle can fill back in in
- 7:16Speaker 1: the area, changing the mass in that particular part of
- 7:20Speaker 1: Earth and hence changing the gravity. Right, Yeah, it's one
- 7:24Speaker 1: estimate has between two thousand and ten and two thousand
- 7:26Speaker 1: and eleven UM, the Greenland ice Shield lost two hundred
- 7:30Speaker 1: and twenty four giga tons of mats. So not only
- 7:34Speaker 1: is that going to change the land formation in the mass,
- 7:35Speaker 1: it's gonna make the sea level rise at a rate
- 7:39Speaker 1: of about point seven millimeters a year. That's going to
- 7:42Speaker 1: change the makeup of the Earth. Um. And so they
- 7:45Speaker 1: have a couple of buddies, Tom and Jerry that are
- 7:50Speaker 1: in orbit satellites, twin satellites about a hundred and thirty
- 7:54Speaker 1: six miles apart from each other. Do you know why
- 7:56Speaker 1: they're called Tom and Jerry because they're chasing each other
- 7:58Speaker 1: and then only they're on the same orbit exactly a
- 8:01Speaker 1: polar orbit. Yeah, it's very cute. So they're constantly going
- 8:04Speaker 1: from the North pole to the South Pole um as
- 8:07Speaker 1: the Earth spins below them, right, that's right. And um
- 8:11Speaker 1: they're taking they're they're taking measurements, two different types of measurements,
- 8:15Speaker 1: but they're precisely separated from one another, and they're on
- 8:18Speaker 1: precisely the same orbit, so they can. Really what they
- 8:22Speaker 1: produce every thirty days is a full map of the
- 8:25Speaker 1: gravitational field of Earth. Yeah, and they've Nanasa. They always
- 8:29Speaker 1: work with other people, it seems like, which is a
- 8:30Speaker 1: good thing to work with people around the world. But
- 8:32Speaker 1: they worked with a company in Germany to develop UM
- 8:35Speaker 1: an ultra precise distance measuring system that basically can measure
- 8:41Speaker 1: within the precision what they say is one tenth of
- 8:44Speaker 1: the width of a hair. That's pretty precise. Yeah. So
- 8:47Speaker 1: basically these things are flying U and between the two
- 8:51Speaker 1: they're measuring the distances and discrepancies between these two identical
- 8:56Speaker 1: twin satellites, and that's information is being relaid back analyze. Yeah,
- 9:00Speaker 1: because the upside of this is number one, the Earth
- 9:03Speaker 1: is not a perfect sphere. We know that. I can't
- 9:05Speaker 1: remember what we talked about that in oh maps. Yeah potato. Yeah,
- 9:09Speaker 1: in the the the gravitational field is not perfectly round either.
- 9:14Speaker 1: It's lower in some places, higher in other places. The
- 9:18Speaker 1: force of gravity um. So yeah, it's formed what was
- 9:23Speaker 1: coined the Potsdam gravity potato. And if you look it
- 9:26Speaker 1: up now there's some pretty cool UM artists rendering of
- 9:30Speaker 1: what the Earth's magnetic field looks like and as a
- 9:32Speaker 1: three dimensional model. Yeah, it's very cool. Um, so check
- 9:35Speaker 1: that out. And that's been updated dramatically in the last
- 9:39Speaker 1: couple of years thanks to this GRACE project. Yeah, and
- 9:42Speaker 1: the ultimate goal basically is to measure this gravitational field
- 9:46Speaker 1: over time see how it's changing with kind of accuracy
- 9:50Speaker 1: we've never had before, which will in turn inform us
- 9:52Speaker 1: on climate related uh drunk right, I mean and and
- 9:58Speaker 1: is it just a correlation between mean, like ice caps
- 10:00Speaker 1: melting in a change in a gravitational field, or does
- 10:03Speaker 1: that ice cap melting trigger that change in the gravitational field,
- 10:07Speaker 1: which in turn has some other effects. So, um, there's
- 10:12Speaker 1: a lot of I think understanding we can gain from
- 10:15Speaker 1: knowing what the gravitational field is changing, how it's changing. Yeah,
- 10:19Speaker 1: do you like using your GPS to get somewhere, Well,
- 10:23Speaker 1: then this kind of information can go on to help
- 10:26Speaker 1: GPS because basically it's just gonna improve the trajectories of
- 10:31Speaker 1: these UH satellites and everything is just more specific. It's
- 10:35Speaker 1: like a hundred times um more detailed than they've ever
- 10:40Speaker 1: had before. So that's gonna help everything out from detecting
- 10:43Speaker 1: climate change or temperature and in like potential hurricanes and
- 10:47Speaker 1: stuff too, like getting you to McDonald's, right, you know,
- 10:53Speaker 1: which is pretty important by the way, chuck. Um uh,
- 10:58Speaker 1: the tropical storms. You want to how they think they form? Now? Um, well,
- 11:04Speaker 1: I'm gonna tell you. So. The speed of waves on
- 11:06Speaker 1: an ocean, um, if it matches the speed of the
- 11:12Speaker 1: movement of some air above it, and an umbilical cord
- 11:16Speaker 1: of warm, humid air can get into this little pillow sandwich.
- 11:22Speaker 1: It forms this protective pouch and from there a convection
- 11:27Speaker 1: current can start and form into a tropical storm, which
- 11:30Speaker 1: can then form into a hurricane. That's what they learned
- 11:33Speaker 1: from the GRIP program. Man, it seems like they would
- 11:36Speaker 1: have known this stuff before then, you think, so, you know,
- 11:38Speaker 1: but we're talking like two when they're I don't even
- 11:42Speaker 1: think it's been proven. I think that that's what they
- 11:43Speaker 1: think based on the data from the two thousand ten experiments. Yeah,
- 11:46Speaker 1: aren't they still analyzing that stuff? Alright? I imagine like
- 11:51Speaker 1: that's got to be a pretty good field to get
- 11:54Speaker 1: into now and in the next like five ten years,
- 11:57Speaker 1: analyzing NASA data. Yeah, and just anything to do with
- 12:02Speaker 1: the climate probably anything, Yeah, things that's changing. It's gonna
- 12:05Speaker 1: be gangbusters. There's a lot of money in the weather. Um.
- 12:10Speaker 1: All right, so that's tropical storms and hurricanes. We didn't
- 12:13Speaker 1: talk about the GPM project. Um. Yeah, that they're working
- 12:18Speaker 1: with UM. NASA's working with Japan and they're NASA, which
- 12:22Speaker 1: is called the Japanese Aerospace Exploration Agency or JACKSON, and
- 12:27Speaker 1: that is a Global Precipitation measurement and they are using
- 12:32Speaker 1: satellites to observe all kinds of participation precipitation patterns all
- 12:38Speaker 1: over the world. And basically, like before, we can only
- 12:43Speaker 1: place these things in certain spots that were easier to
- 12:46Speaker 1: get to, and you can't place them out of the ocean,
- 12:49Speaker 1: and you can't place them in the andies because it's
- 12:50Speaker 1: too rocky. This allows us to study the entire globe
- 12:54Speaker 1: for the first time. So they're following they're basically tracking
- 12:57Speaker 1: the movement of water around the planet on like a daily, seasonal,
- 13:01Speaker 1: a yearly basis um. And what they hope to be
- 13:04Speaker 1: able to gain from this it's a predict when floods happened,
- 13:06Speaker 1: because apparently a major flood happens every day around the Earth. Yeah,
- 13:12Speaker 1: and a lot of times those floods lead to landslides.
- 13:15Speaker 1: We saw firsthand in Guatemala what happens when a landslide
- 13:18Speaker 1: comes down. Remember, oh, yeah, we were standing there and
- 13:21Speaker 1: they said, this is literally twelve feet higher than it was. Yeah,
- 13:24Speaker 1: we were standing on the remains of a village that
- 13:26Speaker 1: got caught in the middle of the night and they're like,
- 13:29Speaker 1: there are people down there still. Yeah, you could still
- 13:31Speaker 1: see the swath that have been cut through the jungle
- 13:33Speaker 1: on the mountain side. Right. So they're hoping, okay, well,
- 13:35Speaker 1: if we can figure out when a flood's coming, we
- 13:38Speaker 1: can predict landslides in turns, So by tracking global precipitation,
- 13:43Speaker 1: that's what they're hoping to be able to do with that. Yeah.
- 13:45Speaker 1: They're also using uh L I d a R at
- 13:49Speaker 1: the light R Surface topography system. This is my second
- 13:52Speaker 1: favorite one, the list one UM, and they're hopefully going
- 13:56Speaker 1: to be able to attract things like volcanoes, earthquakes, landslide
- 14:00Speaker 1: us and erosion. But not wildfires. No, not wildfires. That's
- 14:04Speaker 1: crazy talk. That is crazy talk. But it's the same
- 14:06Speaker 1: thing as with tracking precipitation. As of two years ago,
- 14:11Speaker 1: we had to physically put some sensor somewhere and there
- 14:14Speaker 1: are places we just couldn't get to, and now that
- 14:17Speaker 1: we have satellites, we can track that stuff. Same goes
- 14:20Speaker 1: with this, like we used to have to be able
- 14:22Speaker 1: to find a fault line, put sensors there and then
- 14:26Speaker 1: monitor that um with with the list program. With leader UM,
- 14:32Speaker 1: they're using lasers to monitor fault lines and find new
- 14:35Speaker 1: ones that we didn't know were there before, track their movement,
- 14:38Speaker 1: and then use those to predict earthquakes and then similarly
- 14:41Speaker 1: predict volcanoes. So listen to this. Okay. The resolution now
- 14:47Speaker 1: they have is five meter horizontal resolution with a precision
- 14:51Speaker 1: of four inches. Previously, the best data we could get
- 14:55Speaker 1: was thirty meter resolution with a thirty to foot precision,
- 15:01Speaker 1: So went from thirty two to four inches. That's pretty good.
- 15:05Speaker 1: They'd be like, give it take thirty two ft. Yeah,
- 15:07Speaker 1: now let's give it take four inches with thanks to lasers,
- 15:12Speaker 1: so they could possibly detect volcanic activity before it happens. Right,
- 15:16Speaker 1: And the way that they're doing that, you would think, well,
- 15:18Speaker 1: they're using thermal cameras. You'd be wrong. What they're doing
- 15:20Speaker 1: is looking for land deformation. Apparently before a volcano goes off,
- 15:25Speaker 1: that land around it literally deforms, it swells due to pressure.
- 15:31Speaker 1: And since we are tracking topography now using this UM
- 15:35Speaker 1: this program, we can say, oh, well that that crater
- 15:40Speaker 1: wasn't three times larger than it is now like a
- 15:44Speaker 1: week ago, maybe a volcan is about to go off. Uh.
- 15:48Speaker 1: And it's not just volcanoes and natural disasters. They can
- 15:52Speaker 1: also monitor erosion and top soil loss, basically anything on
- 15:56Speaker 1: the Earth that's interesting they can like really accurately closely monitor.
- 16:00Speaker 1: Now and this said two thousand sixteen, is it already underway? Um? No,
- 16:07Speaker 1: it's two thousand thirteen. Chuck. Now that says it was
- 16:11Speaker 1: gonna launch in two thousand sixteen, but it's already Is
- 16:13Speaker 1: it already going Okay? I think it's launching in two
- 16:16Speaker 1: thousand sixteen. Okay, so this is just the plan, you're right, Yeah,
- 16:20Speaker 1: I know they have a lot of like this just started,
- 16:23Speaker 1: like the UM I think it might have been the
- 16:26Speaker 1: Grace Program started in two thousand two and it's been
- 16:29Speaker 1: going on. It is the Grace Program, the one with
- 16:32Speaker 1: Tom and Jerry. Right, Yeah, that was right, and it
- 16:34Speaker 1: had its tenth anniversary in two thousand twelve. I think
- 16:37Speaker 1: that might have been the first project like this and
- 16:41Speaker 1: now NASA's throwing like everything into this stuff, and we're
- 16:44Speaker 1: just at the at the forefront, at the very beginning
- 16:46Speaker 1: of this kind of thing. This is a very timely episode. Frankly,
- 16:50Speaker 1: it's actually um they have. In fact, I think these
- 16:54Speaker 1: new probes are even newer than the List program, right
- 16:58Speaker 1: that NASA is proposing to launch, the one we were
- 17:00Speaker 1: just talking about with the volcano deformation. Yeah, yeah, um
- 17:04Speaker 1: this is a pair of satellites that monitor little bitty
- 17:07Speaker 1: changes in the surface. And um, I guess it's a
- 17:11Speaker 1: funding thing because I don't think these two are even uh,
- 17:15Speaker 1: I think they're still just like in the proposition phase.
- 17:17Speaker 1: So I guess we should say, like then they will
- 17:19Speaker 1: be doing this, this is coming yeah, and like this
- 17:21Speaker 1: particular project. Yeah, and the precipitation when his launches in
- 17:25Speaker 1: February of next year. So it sounds as though these
- 17:28Speaker 1: things are already happening. But I think it's just like
- 17:30Speaker 1: this is how it's gonna work. It sounds as though
- 17:32Speaker 1: they're already happening because of us. The tents were using
- 17:37Speaker 1: that's right, we're using present, we should be using future perfect.
- 17:41Speaker 1: One of the problems with the satellites, though, is um
- 17:43Speaker 1: and with lasers, is clouds right? Because clouds get in
- 17:47Speaker 1: the way. It's got to be a clear day to
- 17:49Speaker 1: use most of this stuff. Hold on, I know you
- 17:52Speaker 1: love talking about clouds. I do too. But before we
- 17:55Speaker 1: go any further, what do you think about a message break?
- 17:57Speaker 1: That's great? Okay, So back to clouds. They caused trouble
- 18:07Speaker 1: with lasers and with satellites. Yeah, so that you gotta
- 18:10Speaker 1: count on clear days. So it's not like these things
- 18:13Speaker 1: are humming seven. Weren't you surprised finding out that clouds
- 18:18Speaker 1: are still an impediment to lasers? No, I would have thought, like,
- 18:22Speaker 1: I mean, the projects we're talking about, so like, gee, whiz,
- 18:24Speaker 1: that can't cloud I thought that. It just seemed kind
- 18:28Speaker 1: of like, well, what are you guys gonna do about that?
- 18:30Speaker 1: Because that's a pretty big obstacle. Yeah, I guess you're right. Yeah,
- 18:34Speaker 1: maybe they could have an anti seating program, Oh yeah,
- 18:39Speaker 1: to disperse clouds. Nice. Um, so, chuck, NASA doesn't need
- 18:43Speaker 1: to turn its back fully on space, like we said,
- 18:45Speaker 1: it's still carrying out the Mars mission. Um, what was
- 18:50Speaker 1: after that? Are they going to Saturn? I don't know,
- 18:53Speaker 1: Saturn Uranus? Maybe they're they're exploring some moon I can't remember,
- 19:00Speaker 1: remember it's what They haven't turned their back on space,
- 19:02Speaker 1: and they don't need to because there's a huge threat
- 19:04Speaker 1: from space bearing down on us constantly. That's right near
- 19:08Speaker 1: Earth objects, which I feel like we should do a
- 19:12Speaker 1: podcast just on near Earth objects. If you want to
- 19:15Speaker 1: get here then some medium, go watch the movie Armageddon done.
- 19:22Speaker 1: Although that is deep impact in armagedding. We're both um,
- 19:26Speaker 1: while fanciful, not too far off, and that there are
- 19:30Speaker 1: objects that come near the Earth and we think if
- 19:33Speaker 1: we can detect them soon enough, that there is existing
- 19:35Speaker 1: technology now that can throw these things off course. Right,
- 19:38Speaker 1: and Earth is constantly being bombarded every day about a
- 19:41Speaker 1: hundred hundred tons of material like rain down on the Earth.
- 19:47Speaker 1: We're talking little particles, things that break up in the atmosphere, um,
- 19:52Speaker 1: mostly like comment dust and stuff. Right, Um, But there
- 19:57Speaker 1: are uh NASA estimates about a thousand objects that could
- 20:04Speaker 1: collide with Earth that are kilometer or more in diameter.
- 20:08Speaker 1: It's point six two miles in diameter, and that if
- 20:12Speaker 1: any one of these impacted Earth, which they do about
- 20:15Speaker 1: every ten thousand years, it would be what's called a
- 20:18Speaker 1: global catastrophe. Actually, good news, buddy, that is every several
- 20:22Speaker 1: hundred thousand years, So what comes down every ten years?
- 20:26Speaker 1: About every ten thousand years, asteroids um larger than about
- 20:29Speaker 1: a hundred meters could hit the Earth and that would
- 20:32Speaker 1: just be like a local disaster. So it would be
- 20:34Speaker 1: like a one the size of a football field. Yeah,
- 20:37Speaker 1: and that I mean, that's not great if you're near it,
- 20:39Speaker 1: but it's not like a what they would call a
- 20:42Speaker 1: global disaster, like the end of the world type scenario.
- 20:45Speaker 1: And that's one that's like a kilometer in diameter. Yeah,
- 20:48Speaker 1: And it says every several hundred thousand years or so.
- 20:50Speaker 1: I feel like, yeah, what are the chances that that's
- 20:54Speaker 1: going to happen the next like forty years? I don't know,
- 20:56Speaker 1: aren't we like on a when was the last one?
- 20:59Speaker 1: It was about a quarter of a million years ago,
- 21:02Speaker 1: wasn't it. I don't know. Was it the one that
- 21:05Speaker 1: formed the chit club creator? I don't think I've pronounced
- 21:09Speaker 1: that correctly, but you know what I'm talking about people
- 21:11Speaker 1: who are familiar with that or they do. But the
- 21:14Speaker 1: point is we need a lead time on the stuff.
- 21:17Speaker 1: Chee Club, the Chicken Club. It's a there's an X
- 21:21Speaker 1: in there, but it's a. It's it's in Mesoamerica. So
- 21:24Speaker 1: the X is like a hawk. Oh, it's pronounced cutulu. No,
- 21:29Speaker 1: it was close oak, it's like that. But there's a
- 21:35Speaker 1: chi and I believe a club afterwards. So I'm just
- 21:38Speaker 1: gonna say, chee club creator. But I think that was
- 21:41Speaker 1: longer ago than a hundred thousand years ago, that extinction event. Yes, okay, Well,
- 21:48Speaker 1: the good news is if we have a little bit
- 21:50Speaker 1: of lead time, like a few years, supposedly there are
- 21:54Speaker 1: things that we can do to knock these asteroids off course,
- 21:58Speaker 1: like what one is. Using nuclear fission weapons, you set
- 22:04Speaker 1: it off and the trick is you don't want to
- 22:06Speaker 1: blow this thing up, no, because then you might have
- 22:08Speaker 1: a lot of problems. Yeah, that's even worse. But um,
- 22:12Speaker 1: it would just set it off course. And even if
- 22:14Speaker 1: you set something off course by a few millimeters over
- 22:17Speaker 1: the course of years, that could be enough. So it's
- 22:19Speaker 1: not like they're looking to knock at miles away or anything,
- 22:22Speaker 1: although in the movies that's how they do it. Yeah,
- 22:24Speaker 1: and the movies that's how they did do it. I think,
- 22:26Speaker 1: of course, we may mind them, which we talked about. Yeah,
- 22:29Speaker 1: asteroid mining, um and tracking these things has actually become
- 22:34Speaker 1: something of a crowdsource thing. There's NASA has this um
- 22:39Speaker 1: All Sky Fireball Network that sounds so not real, yeah,
- 22:43Speaker 1: but it is. It's a real program they have where
- 22:46Speaker 1: they have cameras that are connected to the Internet that
- 22:49Speaker 1: are constantly filming the night sky. Most of them are
- 22:52Speaker 1: along the Eastern Seaboard. We got one here in Georgia, yeah,
- 22:55Speaker 1: and Alabama, HASM, Tennessee. Um. They're they're grouped in clusters. Um.
- 23:00Speaker 1: And actually, if you want to propose your location as
- 23:04Speaker 1: a place to host one of these cameras, typically they're
- 23:08Speaker 1: like on schools or things like that, Yeah, you can.
- 23:12Speaker 1: You can submit an application and if there's there's really
- 23:15Speaker 1: just like four criteria. It's like there can't be a
- 23:18Speaker 1: lot of light pollution or a light nearby, and that
- 23:20Speaker 1: rules me out. You have to be able to um,
- 23:23Speaker 1: you have to be connected to the internet, like a
- 23:26Speaker 1: couple of a couple of other things. Um. But it's
- 23:30Speaker 1: it's like you can get a camera set up and
- 23:32Speaker 1: be part of the All Sky Fireball Network. That's pretty cool.
- 23:35Speaker 1: I think the plan is to eventually have fifteen of
- 23:38Speaker 1: these in place, and um, I guess tracking fireballs, Yeah,
- 23:44Speaker 1: which were good, good things to keep TAM's on for sure,
- 23:48Speaker 1: you got anything else? No, that's all the news about NASA.
- 23:52Speaker 1: I wish NASA would sponsor US man, that'd be awesome. Yeah,
- 23:55Speaker 1: talk talk about someone we could stump for NASA. Yeah, sure,
- 24:01Speaker 1: let's let's do it. NASA. What's your problem? You guys
- 24:04Speaker 1: have deep pockets? Yeah? Uh, let's see. If you want
- 24:07Speaker 1: to know more about NASA, you can type that word
- 24:11Speaker 1: into the handy search bar how stuff works. That comment
- 24:14Speaker 1: will bring up a bunch of articles we love NASA here,
- 24:17Speaker 1: how stuff works and stuff you should know. Um, and
- 24:19Speaker 1: since I said handy search bar, Chuck, it's time for
- 24:23Speaker 1: listener mail. Straight to listener mail. Yeah. Oh do you
- 24:28Speaker 1: hear that chime? Man, it's like two thousand nine? All right,
- 24:34Speaker 1: dear guys and Jerry. It just got home from another
- 24:36Speaker 1: eight hour car trip with my hobby, during which we
- 24:38Speaker 1: binge listened to the stuff you should know. Yeah, this
- 24:41Speaker 1: has been our car trip ritual for about a year now.
- 24:43Speaker 1: We actually moved to Atlanta, Kenna saw last August, and
- 24:48Speaker 1: we make pretty frequent trips to our hometown of St. Louis.
- 24:51Speaker 1: That's a long car trip, Yeah, it sure is. I
- 24:54Speaker 1: wonder if they know that you can fly there really quickly. Um.
- 24:58Speaker 1: He introduced me to the Podcas asked on her first
- 25:00Speaker 1: trip down here, and I have to admit I didn't
- 25:02Speaker 1: have much hope. I'm a ballet teacher who loves arts
- 25:05Speaker 1: and fiction in long hours with Netflix, and he is
- 25:07Speaker 1: a self tart programmer who loves biographies and doing math
- 25:10Speaker 1: for fun in its free time. So when he told
- 25:13Speaker 1: me what the show was, I was thinking, great, I'm
- 25:15Speaker 1: gonna feel dumb and bored. But we gave it a try. Anyway.
- 25:18Speaker 1: I also have to admit, and this one is kind
- 25:20Speaker 1: of funny. After listening to one or two episodes, I
- 25:23Speaker 1: told him I didn't like it. He not understanding how
- 25:26Speaker 1: that was possible, ask me why not, and I said, dude,
- 25:29Speaker 1: it's so condescending that the way they ask each other
- 25:31Speaker 1: questions and converse as if they don't already know what
- 25:34Speaker 1: the other person is gonna say, as if he sniffed
- 25:37Speaker 1: me off the case right away. She says, So she's
- 25:40Speaker 1: a true fan by saying, I don't think that's fake.
- 25:42Speaker 1: I think they're really right. Don't write out a full
- 25:45Speaker 1: script ahead of time, I believe it or not. He's right,
- 25:49Speaker 1: believe or not. That changed everything, which might seem silly,
- 25:52Speaker 1: but I bet you listened to a past episode and
- 25:54Speaker 1: imagine it was totally scripted and rehearse she'd see what
- 25:56Speaker 1: I mean now, I recommended everyone. I can't even conceive
- 26:00Speaker 1: of how we would be able to generate the level
- 26:04Speaker 1: of clumsiness that we rise to every episode. You couldn't
- 26:07Speaker 1: write that. Yeah, So thanks guys for putting out a
- 26:09Speaker 1: very entertaining program for people of all ages to enjoy,
- 26:12Speaker 1: and for being less sad than this American life, which
- 26:16Speaker 1: we also love, but sometimes we just don't have enough
- 26:19Speaker 1: tissue and emotional resolve to listen to it. That is
- 26:22Speaker 1: from Amber and Ben Studive Baker. Thanks to you guys.
- 26:26Speaker 1: Thanks Amber and Ben. Hey there, if you're on one
- 26:28Speaker 1: of your road trips, drive safe and drive safe to
- 26:31Speaker 1: everybody out there who's listening on a road trip or
- 26:35Speaker 1: on a long haul or on an airplane whatever. If
- 26:39Speaker 1: you're listening to us right now and you're traveling, I
- 26:42Speaker 1: hope it's a nice time, agreed. Uh. If you want
- 26:44Speaker 1: to tell us about those travels, you can tweet to
- 26:46Speaker 1: us at s Y s K podcast. UM. You can
- 26:49Speaker 1: join us on Facebook dot com slash Stuff you Should Know.
- 26:52Speaker 1: You can send us an email Yeah Too Stuff Podcast
- 26:56Speaker 1: at Discovery dot com, and you can join us at
- 27:00Speaker 1: our home on the web. Stuff you Should Know dot
- 27:02Speaker 1: com for more on this and thousands of other topics.
- 27:10Speaker 1: Is it how stuff works dot com m brought to
- 27:19Speaker 1: you by the all neween Toyota Corolla