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Cosmic Queries: Space Probes with Dr. Amy Mainzer

2020-02-08 | 🔗

JPL astrophysicist Dr. Amy Mainzer is back as guest host for this week’s podcast, and together with comic co-host Chuck Nice she answers your questions about space probes.

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This is an unofficial transcript meant for reference. Accuracy is not guaranteed.
Welcome to start on your place in the universe where science and pop culture collide. Startup begin right now to have your daddy and welcome the star. Talk, radio mining The aim in mind, Sir and Anne, was drawn up at the jet propulsion laboratory in Pasadena, California, and I'm here, guest hosting I'm here My wonderful co host, Chuck NICE, Amy, how're, ya, undoing great good to see you get to be here with you yeah. Today we are going to talk about spacecraft. Yes, that's right, space, probes and It's something you would know about because, as we have talked off the air, I found out that you, an engineer for quite some time with Lockheed Martin and building spacecraft
at seven, my my other life, my alter ego, you know it's so we're, because I've when I think about Lockheed Martin Weir, comes to mind. I envision, like the underground layer the bond of you, know like there's: no walls there, just rock and titanium everywhere, and guys walkin around and white jumpsuits with clipboards and hard at that's. You know: what's it like city
I was cured- includes number one and no security claims, but I would say there were a lot more guys wearing socks with sandal lots of socks with sandals under was one really cool tunnel. That went a long way in the end. The walls would mean out of rock. Actually they were ok. I'll. Take that I was conquered I'll. Take that both sides with animals are well listen. You know we have a cosmic queries. What we do is we take the questions from all over the internet and all of the outlook where we are found and people just write, em things they want to know about, and this is right up your always so you will answer them, so you ready to get into a cure. Let's go out here. We go. Let's start off with David. Spitzer was a two part question. Where would you most be interested in sending a probe end up upcoming missions, which interest or excites you most low personal.
They're from Davis sure. Well, there are so many grey places to explore in our solar system and beyond it, and the robots that we send out are basically our eyes in our ears. They can go bases and see things that are fragile human bodies. Pretty much just can't do so. They can go places like, for example, into the service of Europa, or maybe even the ice of Europa. I personally think that would be a pretty cool place to go right, because Russia is a moon of Jupiter and they think that it has a liquid water ocean underneath a very icy surface. So who knows maybe they're space squids under their right I'll refund nice, so there you have it proves to Europa. That's floats your boat personally is what you said: speak ass breakers Europa, and it would be more like that skis your eyes. I dont know something like South West? Who knows of cats are so now you know what we're talking about proves. You know these are spaceships, basically
right that that were setting out to look for things and here is something that Logan keeps tweets at tweets by allocate now our asteroid field. She says, think STAR wars really dangerous, or is there enough room between in the rocks to navigate. So that makes sense. If we're going past our solar system, how do you get past the asteroid? Well, you know. When astronomers first thought about sending spacecraft out into the outer reaches of the solar system, like the pioneers in the Voyager missions at first, they were very worried about this exact thing. The asteroid built is full of stories between Mars and Jupiter, and we know that at least six hundred thousand of these asteroids there today the thing is is: is it like the empire strike backing that Seymour Hansel is trying to give Darth Vader the slip. Absolutely gotta dodge among all the space rocks well know, though no
it's one of the great disappointments of an asteroid scientists when you were when you first starting in the field. You realize that actually asteroids are big, but space is bigger, right and there is a tremendous amount of room between all of these space rocks. So it's a very comfortable commute. Yes, it's not cellared, but so it really is it. You don't need the millennium falcon to get through an airline with ordinary. Not I wish I had a millennium falconer. Don't we all? Yes, every one need not take it to work every day. You kill me that we also saw an answer of that scene? Ok, completely, right completely, unfathomable that it. Diet. Space loser could live on an asteroid, right, yeah and seriously right. Fortunately, I mean I'd get spaceless due to cool, but we don't know of any probably a good thing. I must move on from Facebook. This is
carry corral who says what is the single most important thing? We ve learned through data sent by a space pro. Have we learned anything that, prior to launching probes, we had never even contemplate it previously, ok, so one of that there have been so many discoveries that have just really changed our understanding of astronomy that come from space missions, for example, the cosmic background than this something that was was first discovered on the ground by radio astronomers. This is an echo left over from the Big bang itself right way back, in time? Thirteen point seven! Well here we go billion year. Jets exactly is a long time ago, but this radiation is still around and astronomers had found evidence of it on the ground
when they launched the cosmic Background explorer mission back in the eighties. They were actually able to really precisely tell exactly how old those echoes of light were, and from that tell the age of the universe itself wow. So what you say that the most important discover? that we have made one would by launching approach. I would say that one of the big ones, that's a pretty important discovery, the age of the universe and, of course, the Hubble space telescope was instrumental in finding other ways too high. Pinned down that number right by measuring the distances of exploding. Stars called supernova, so that's another one. I mean they're just so many examples of where these robots and help us out. I just learned that there is a plural for supernova, which is Supernova That's all right. I have a special infect. The nail polish I'm wearing right now is actually called supernova, and what color is your name? Let me see there, over and and fetching? I must say I think it very sparkly very spark. Laura soup
That's what you want. Supernova called the always supernova ever in my life was a shabby and it so he wasn't. Some super artless move on us got Macgregor wants to know. This was the most important probing used today. The rock star approved the one to watch. Also, can we look forward to it in terms of new probe tat? allergies right. Ok, so I have a personal couple: favorites everybody knows and loves the Hubble space telescope at our one of our biggest workhorse telescopes. That we use is astronomers to look at everything from the distant universe to very near by things. I also have a fair, fan of smaller things. Like the Whitefield Infrared Survey, explore a little infrared telescope, it a heat, sink feet seeking telescope. Seen an awful lot of asteroids nice yeah, so we ve got up
We ve got a few new things coming up on the horizon. That'll really expand our knowledge of the universe, but that's classified body ok, we're we're gonna, take a short break here, some more when we come back to start operating. We back. The scar talk, radio, you're, just host a mindset, jet propulsion lab and I'm here with my co host, Chuck nice Amy, I or your course we're doing cosmic queries, space probes, endless jump right back into
questions? This one from Google Plus and Stephen worry would like to know this. Do you think it's worth spending limits science budgets on smaller purpose, built missions like wise, which you mentioned already today, or is it better to invest in larger, more diverse? nations like web. This is a very, very important point in question here for four NASA and how we decide our priorities. I'm a big fan of having a mix of missions. I like not putting all of my eggs in one basket, so I like to be able to have I'd like to see us be able to do a mixed. Small missions, some media missions in one or two really big ones? But if you have only one thing, then you kind of can't do certain classes of science, run some missions dont mean a big giant battle, STAR Galactica,
questions you can only answer with some fairly big stuff. So I think, having a mix is a really good idea: cool called so there you have it gotta mix it up, so that so do we think that will ever see a refunding of Massa, or is it going to continue to be a constant stripping away of funds, because the dummies in Congress don't see the now you and what what we do when we gleaned things from knowledge from space, for one thing that gives me hope is all the people who are listening to start operating array now mean there are people who love space and if you have space say so, tell your neighbors. Tell your friends. Tell your kids, because that's how We get to do all this stuff when people and that we explore our universe, that we learn more about it than we get to do that, because our Congress then our Senate. They hear us when we talked to them, so the squeaky hands
the oil, absolutely rice, alertly, even others, no noise and raise our very cool. This one from Google plus John Mink wants to know this. What tends to be the limitations you run into with probes? Is its size available power cost redundancy is a combination of things, or is there always one or two, and how much did these limitations change on different missions? we yet so there are a lot of things that are difficult about launching stuff into space. Main thing is, it is ten thousand dollars a pound, what it is crazy, expensive to put something in space, ten thousand dollars apparel? Yes, so I wouldn't lighter materials are priority number one. Yes, absolutely in fact, one time I was thinking about it. What if we wanted to launch what I would call brick cam, which is raised The launch, a brick in the space? It would be very expensive, just even launch a brick just
once a break if you really wanted to put it on spacecraft. So yes, mass is key. You ve gotta the thing as lightweight and his small as you possibly can that's the challenge. So those are the two now and I guess because you build this stuff or you did at one point in your life that where we headed, I made the. How close are we to getting something very small very light and still very effective. Well, I am waiting for someone to invent something that I call on obtaining em This is a material that has zero ass consumes zero power. I think we could do this rose. That's all I mean. Obtaining on obtaining nights, you, David Cameron, declaring war, cannot look at our own sake. Awesome. This is from Patrick Dennett from Facebook is the reason we haven't sent a rover to wreak to Venus that the temperature
be problematic or is there some other reason, technical or budgetary, that stopping this from happening? Oh, yes, so Venus is one of these places. That is just really tough to explore. It's kind of earth evil Twin, if you well, ok, because even though it sort of same sizes, the earth. It's about. Nine hundred degrees on the surface is hot enough to melt, led wow and the admin Your pressure is about ninety times, are surface pressure here on earth and then top it all off. A lot of the atmosphere is sulphuric acid. So take your pick it's, not a nice place. Out of us play no, and so the question I have always had is okay. Well, what is it that get your spacecraft first is getting crushed to death? Is it getting cooks or learn by us right right or dissolved by acid. Yes, so, basically not a very friendly, please know, and it turns out weirdly enough. We think that what really gets these things is actually temperature really because the right
since did in fact land a couple of space probes under the surface Venus and they lasted for Forty five minutes while and that was announced and TAT was the end, look at and isn't funny that Venus the God of love need, after after all, that nastiness you just put out there. That makes no sense to be. What, though, very true vary too, I would we need new. Aren't here we go. This is Brett a verb EC wants to know this. The president announced funding for a landing on unmanned craft on an asteroid to last, so it to the moon, our probes, going to be sent to prospect a candidate destroy any news to share about this mission? Now, if I'm not mistaken, I believe the president said twenty twenty five or twenty thirty one of something like
that yeah solar president set out an ambitious goal to go to an asteroid by twenty and twenty five and hunger. So one of the concepts of come up as well. What have we would bring the asteroid back There is a possibility that thing is, you have to find exactly the right asteroid. Not not all asteroids are alike some of them are much harder to get to than even getting the Mars so you'd have to find an asteroid. Is that's in exactly the right orbit? It wouldn't asked an enormous amount of fuel to get too and then get back. So that's a tough work I dont work on this project, but I know other people who do not really oh yeah, there's a lot of work if they were in a really make that a reality so will see what happens. So. Here's the thing that really disturbs me just lobe you talk about bringing back. You know I gotta get the the the feeling like people who
Florida and bring back low alligator is that it becomes more of a problem. They thought and any flush it. Now I got a big albino out most allocated in the solar system. So Where exactly are we bring this? We asteroid backed there's an alternate content. That isn't so much about bringing back a whole asteroid as just bringing back a small, bolder awful one along. Maybe that's a little better cut up, no alligators art Rufus from Facebook once denote this. Would it be possible to send the probe out into space land on an asteroid, hit a ride somewhere and then lift off of it again and continue kind like a space bust? If so, could we get farther into space? then we would normally be able chill. Oh, that is ok, so really cool thing about this summons
have you done it? What yeah? The Japanese sent a mission called higher Boucher It actually went to an asteroid, any landed on it even collected a few tiny, tiny little greens off of it, and then it came back. Sweet, and actually came back and re entered the earth's atmosphere, bringing back it's very precious sample cargo you'd I saw the and what's funny is what came back with this tiny little disk? That's all. It was with a tiny little light. Plate was like a saucer yeah a tiny, little bits and pieces that came back and so they're sending a second one is called high abuses our creator revenge of viable, so they gonna do it again and again to go to a different asteroids and they can try to bring back more and we also have another mission. That's coming up called o Cyrus wrecks of Cyrus
we love our acronyms at NASA. Don't ask me what it stands for remember, but it's gonna go to an asteroid and collect the collect, a sample that you would sampling technique that looks kind like an air filter on your car and the idea it's gonna, touchdown on the asteroid, surface and fire some gas into it, and that's gonna push a bunch of dust and pebbles into this thing that looks like an air filter, ok and captures it in actual basil capture. All the dust in everything from this little foot and and then that will come back. I suppose exactly and then it returns to earth and they're gonna pick it up somewhere? Presumably it's gonna land in some nice backyard or something Let me ask you this way. Does a chasm fascinated now you got my curiosity: do we have international cooperation, because you can't tell where the thing is going to land. If you send something out there at lands, one and ask for an it, comes back, you can't say well now, the land. Here right. You know the crazy things
they. Can they can do this and they are going to, but they do have not wherein no, what I say you can't tell I'm saying you would you can't say like ok, we're gonna make it. Here in New York City, that's what I meant to say. We look you. Of course you could tell where it's gonna, let yeah, but do we have international cooperation so that Lands in another country, they don't say which talk about yet. What is this? What is that this is not yet well like high boots, are landed and think in Australia. Remember, right and boy did they have cool space uniforms for picking up the capsule, so I hope they have caused me uniforms wherever it lands nice nice.
Or it will it's time for us to take a very short breakin? Then we'll be right back with war, cosmic queries on startup radio and be sure to take us out on start talk, radio, that net or to start our firms Chuck Norris here. Do you love listening to start
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now for you to join us in what sort of be a fantastic shell visit, start operating dot nets last tickets to grab your tickets before they're gone. Now, some of you may be wondering why the one the only Chuck nice be at this star talk live will. Sadly, the answer is no. I seem to have luck myself into a recording studio and have been stuck here for about three weeks, I now come to the conclusion that this money home- that's right. I live here now, so I won't be there, but near will have some other fantastic comic cohorts, along with some very special guess, to bring the universe down to earth. So once again visit STAR talk, radio, dot, net, slash tickets, get your seats now and will see you at the show. Well, I won't see you at the show because I live here now.
And we're back its title: radio, I'm any minds, are your guest house and under with my photos, Chuck NICE may show we talk about some space pro. Yes, we shall return so space prose. I feel so immature. Sorry that I do. I care help myself editors by sprays, problem like press, ok, it sounds like and it really dies but space programme different from alien probes. Let's not confuse the two are right: let's move on with our questioning from our audience, and this is Brenton better off who wants to know? Why haven't we send approach that can take core sample of them martian lunar surface now mom? What is what we do have a rover, their railway
there's a couple. Rulers govern rovers hours without a deal yeah, but so are we not giving anything back from there? We are not at present returning samples from Mars. We were getting back our lot of pictures, we're getting incredible, now photos and data right, but it's really hard to get something off. This. Surface of Mars and as because Mars is a lot a grab. It of course, you're a lotta gravity. You have to launch it the same way you launched from earth exactly Oh, you would meet some type of propulsion system. Yet was the able to clear the gravitational pull the planet yup and then get back to her? That's exactly the problem, and so the thing is that is really difficult to do, because propulsion means you need fuel and feel means it takes mass. You gotta have something to burned, get off the planet and up until now That's proven very, very difficult, so people have plans for what's called a Mars sample return mission, but it's not easy and insulting
lotta talent to do that. So now I may be silly, but could we not attach a very long string to some type of cancer and just give it a hell of a Yankee. I was. I was can catapults myself. I would like a tribute Shea medieval example. Fling array, however, could do that. I'm getting its also, just as just as a quick it up would not be feasible to think of. Out of a propulsion system, perhaps a in like a tethered like not even a tether, but something that shoot it off the plan. Oh yeah yeah, so people have talked about these things like real gun, like a real got ya like that right Superman Ride. Imagine mountain yards like yeah sprayed off, yet people have talked about,
in its it's just up until now, it's proven pre difficult to get something like that to work in practice, mostly, what we rely on is chemical proposed, most of our rockets use. So basically that would have to be if you're gonna do, that you minds will have a man mission to Mars. Yeah, it's pretty tough. I mean the more simple return with robots is probably a lot easier than sending people, because people have this annoying habit of wanting air and food and babies. Ah yeah they all Davies S, which problem is its like it's kind of hard we call they can meet flinging right, I mean in its is harder than robots were in some ways, robots there much tougher right, and so they Tolerate things that the human body can't write well, wonder, though, all be our overlords, so I for one, welcome the robot they think are here. We go. Let's move
I am to affirm Fernando more or less Francine, who wants to know either any defined candidates for new horizons to explore after PLUTO. So now we ve been Who, though, what was wasn't s right? Will new horizons is gonna really wit by PLUTO super fast, because in order to two pluto in any kind of reasonable amount of time they had to be. They do a bunch of slingshot maneuvers to pick up the speed, and so the thing is you're gonna blast by PLUTO and collect a lot of great data, but the question is would they go somewhere else, and so astronomers have been looking very hard to see if there are any other Koper built objects. These are very icy bodies,
our away from from our son is if they could find any, and as far as I know, there are no viable candidates at present. That doesn't mean there aren't any. It just means you have a nightmare derive yeah, that's right and part of the problem is PLUTO. Right now is in the plain of our galaxy, if its that's just where it happens to be in its orbit, were seeing the milky way behind it, and that is, is there's a lot of stars in their rights, so picking out a distant faint moving object is challenging right and their working on it. So you may slingshot in is that a means of propulsion that is common. When you talk about selling something somewhere yeah. It turns out. This has been one of the key techniques for getting around the solar system. It is You would never thought this fifty years ago that this was possible, but it turns out TAT yet to some of the most distant parts of the solar system, you ve actually got a steel, a little bit of energy of Org. Energy from planets, like Jupiter and even from the earth itself right so cool, so yeah
Basically, you there's they play in timber yeah exactly like lamp, and it's just likely. Meanwhile, you gotta pick up a little speed by hitting a resonance nice all right. Let's go to Andrew myth, band drew's. I wonder if that's real, I'm andred MC band higher priority target with limited NASA funds Europa or tight. Oh oil time, you suddenly you personally, of which one do you think more important. Ass, well, I have to say I really loved getting those images from the Hooligans probe is it? Is it made its way through a through titans atmosphere? But you know Europa looks like an interesting place too, and we know less about it. So I think that might be an interesting place to go into which we haven't really been there right.
In person with it, with a probe going directly their side by probably vote for Europe at this point as you gotta go to the place that so that the road less travel, try something new, I suck know exactly so all right. Well, we're gonna take a short break here and then we'll be back with more star talk, radio and the heritage, a crowded startup review document and on Facebook and Twitter. There were with more startled radio cosmic queries addition minds: are your guest host them here with Chuck night, yes, got lots of questions of inquiring. Minds want to know about space probes, so less jump right back into a text on this question comes from Twitter, Gabriel, Michael's at doc. Michaels.
To this hour? I drives feasible for probes that have planetary or moon asked. Wade, surface landing missions? Yes, well, turn out. Did Sir the DAWN mission use just such an ion drive I think that people are planning to use them for other kinds of encounter and rendezvous missions. So I think it's on the books and people are considering it. Of course, these are systems kind of allow you to use energy very efficiently, but kind of like an electric car takes along and to build up, speed right and a long time to slow down. So now can you just for those who are listening. That dont know is, of course, a very well versed in ion drives something bad. You know spend my time written about all all day, but how
Actually doesn't I caught. You drive work right with the basic ideas to take something linkage, Xenon and you basically each shoot voltage across at you. You apply electricity to it and that produces a reaction right and it's nice because you get a nice gentle push from it right in of using chemicals. We have to put them together and make em exclude right, which can also work very well, but can so take a lot of mass right and there a little more risky in some sense to use, although they ve got on a hardware heritage with the chemical propulsion systems, the iron,
I do have some advantages in that. Their very, very efficient, right and mass is key when it comes to space missions. So people really like that so now, if you were to use something like this, you use a chemical propulsion to get off on earth yet and then you would engage in ion, DR once or in the vacuum of space. Exactly and then you probably get to say, engage eye on dry doesn't attempt grain. I'm sorry! You just got me logs of right. Let's move on regards other from Google plus here, which is our Aru Sammy, is the name. I really were there being a lot of controversy over Cassim ease nuclear contents prior to the pro being launched? Yes Then, however, I haven't seen or heard much about nuclear probes has now
so become reluctant to use nuclear energy for its exploiters needs. Well, it turns out, then the Mars science Lander, the curiosity Rover actually has a small amount of nuclear material that it uses nothing to keep in mind here is we're not talking about a lot of stuff, it's a pretty small amount and is built to withstand a lot of force against it. Nothing is designed not fusion actions that we are talking about here is radioactive decay, so two completely different process asian right. So this is of the nuclear reactor it's happening in our submarine stays on the Waterford ten months set a time exactly. This is basically taking a chunk of plutonium and you just sort of let it naturally decay and do its thing and you capture the electrons, the energy, the comes off of it. You capture the heat annually.
We turn it into electricity that how works more or less so? It's a passive process? Ok you're, not really reacting. Anything together, just sort of this lump that, since this is there you're, just let me add to its own yeah, that's right and the reason that it has to be used in certain circumstances, his cause, if you get too far from the sun right what're you gonna, do right. You'll have the sun's light out heat or power, anything like you can't use solar energy nope, the sun, Jupiter, just Kyle, looks like a star right one by, but still that's what it looked like. The way Jupiter looks to us in the night sky. Exactly so the problem is you, gonna have something to power, your spacecraft got and they use a little chunks of this nuclear material. That is fascinating, very cool are Luke, go wrong, wants to know this or scout RON once and others after chemical Rob Rockets ion thrusters and thermonuclear propulsion systems. What's the next
big step in space propulsion and how much longer do we have to wait for a functional warp drive by the way? You know that is real You know that other stop was just to get to what do we getting warp drive so: I know you know, I have to say is a provisional physicist. I am sorely disappointed that we don't have warp drive. We really nice Lila Skip traffic will win leave the subway or some other new propulsion systems on the on the horizon. Do we think there's some kind of breakthrough, for us is propulsion, while chemical propulsion is, I mean means, and the iron drive is the new latest thing. People are working on other technologies, but they're really pretty hard. It's gonna be a while, unfortunately, until we have that warp drive until then we gotta keep doing research. Fundamental physics in mentally some smart person will figure it out. I hope there you go body weight is the answer me. Yes,
our wills temper short break, and then we write back with more start HAWK radio cosmic weary petition check this out on twitter. Star talk, radio.
Welcome back to start on radio, and I'm here in my co host, Chuck nice and it's time for the lightning round. Yes, it is aiming- and this is where you will answer as many questions as quickly as possible, so we can get to them and when you have finished, we will hear there, you have it so you ready yeah. So what do we say? Lightning round engage. Yes, I right this is from Look James and he wants and others how feasible would it be to send a probed with solar system with an earth like planet and if one could even make it Would it be possible for one to detect signs of life? Oh ok! Well, other solar systems are really really really whopping far away. The nearest start where son is for light years away. If we were travelling at the speed of light, which you cannot do. It would still take us for years to get there and we can travel anywhere close to the speed like if we could someday, maybe we
and people to find signs of life, but really, I think our best bet is to stay here on the ground and try to develop the technologies that we can use here. Nice, so the answer. Is we're gonna be receiving guest not going to find them? Yes, Google plus and pathos wants to know this. How long does it take for telescope to capture and image? Do you have to pointed at a distance object for hours, or is it pretty much instantaneous? talking about one surpass the atmosphere and you're in a probe. You got it ok, so if you're telescope in space, let's say we're this bitter space telescope and we want to look at an echo planet- depends on the kind of object it's really far away. It takes a lot long. And it turns out that the farther away more distant- something it is the fainted it so it takes longer for us to gather information, gathered light from that object. So basically it's a question of how vain it is. If it's really worried object in its close by not so very long at all, maybe even just a couple seconds if it's a very distant galaxy
hours and hours nice. So it really works just like a camera, exactly yeah. If you ve got low light, you gotta take along exposure dog nice. Ok, Francisco Escobar prayer wants to know this, while he's from Costa Rica thought it was joking first, what does NASA do with probes once they have completed? task. Ah, very good question: ok, not listen! What I wonder! Do we get him back curly? Sometimes we get him up oh ok yeah there actually been a couple sample return missions which even come back and re enter into the earth's atmosphere, but by and large most probes are gone gone gone now. If it's an earth orbiting satellite. We actually have requirements to not create space junk and we do they rightly plan to de orbit our satellites and LE or let them decay in the earth's atmosphere where they are designed to burn up completely Nuys located,
from me you say space junk? So is: is there like a junk yard in space? We need like a Sanford in some food for our airspace, Oh yeah, there is a tremendous amount of space junk up there right now and I think we have a business opportunity here. You and I took the view that we should start our own space junk company. We could be so Britain's I've translates five point plan up at at at at at at at operating excellent, let's move and to remove pins or from Mexico City. He wants to know this if we could travel at the speed of light where time doesn't exist, our biology be affected. While we travel now that really doesn't work for pro
because we don't have people on probes, that's right. So if that, if a person is actually travelling close to the speed of light, we know from theory that there should be something called time dilation. They would actually age more slowly, the faster they go. So this is the ultimate in anti aging. Just go really really really fast and in fact, that the time dilation that astronaut on the space station experiences a very, very tiny amount, though, because they aren't going a very large fraction of the speed of light even as fast as they call eyes. Ok, Joseph Gray wants to know this space is so rich. Dick uselessly insanely mine bar Big is really feasible for humans to try we'll between star systems. Ah boy, well, not with the physics we have today. It would take many many many generations- lots of generations, in fact even go to the nearest star, which is for light years away. That is incredibly far. It
taken about nine years for the new horizon spacecraft to go at top speed to PLUTO, and that is an enemy close to the nearest star. So, unfortunately, we need that warp drive. We were talking about yes, that'll. Do there, you go Joseph, not gonna happen. Buddy, Jays Thorstein wants to know this. If it takes three months to get to Mars, is that the time perceived by the astronauts on the shuttle or on earth, I think it is a little bit longer to get to Mars in practice as a little little Lou Morn three months, but you know our spacecraft do get there and it takes. I think, it's by nine months or something like that for the spacecraft to get there, and we do have to actually account for the speed of this his craft when we make the spacecraft clock in actually because of time dilation. This fact that if you go faster, your perceive time is actually a little bit slower, so they do make an adjustment do make an adjustment for the speed of the spacecraft. Look at that Jason Great Questionnaire, you go Eyes Morgan.
It wants to know this. Why can't we set up a chain of probes that Pizza data streams to accelerate signals, Qana like cell towers, well funny thing: we actually have that at Mars there are orbiters these crafted relay data from the Rovers back to earth: sweets yeah. I so we actually have wifi in Spain and that all the time flu we have on this show will. This has been great chuck and thanks I'm I'm your. I guessed host tonight. Amy minds are from the jet propulsion laboratory, filling in four Neil, the grass Thyssen and please be sure to check out check it. Shuts nice comic on Twitter, you and check out start hog. Radio got not until next time clear skies, everyone.
Transcript generated on 2020-02-25.