Sept. 30, 2024
#456: Safeguarding the Moon, Titan's Liquid Sounds & Dark Matter Drifts
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Join Andrew Dunkley and Professor Fred Watson in this engaging Q&A episode of Space Nuts, where they tackle a variety of intriguing...
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Join Andrew Dunkley and Professor Fred Watson in this engaging Q&A episode of Space Nuts, where they tackle a variety of intriguing questions from listeners. From the protection of the moon to the sounds of extraterrestrial liquids, this episode is packed with fascinating insights and cosmic curiosities.
Episode Highlights:
- Protecting the Moon: Mikey from Illinois asks about the measures in place to protect the moon from catastrophic asteroid impacts and what would happen if the moon were significantly altered.
- Sounds of Titan: James from Minnesota wonders if the lakes and rivers on Titan would sound similar to those on Earth, given the differences in atmospheric pressure and liquid composition.
- Dark Matter Movement: Bill from San Francisco Bay Area inquires about whether dark matter can move through Space and be influenced by gravitational events.
- Formation of Atmospheres: Brady from Florida asks how atmospheres are formed on planets, transitioning from a ball of rock and lava to having a gaseous envelope.
00:00 - This is a Q and A episode where we answer your questions
01:25 - Fred and Andrew ask what would happen if an asteroid hit the moon
06:20 - Extra solar might come through. Yes. The thing is, the bigger the object is
06:58 - Next question comes from James Greenfield with Professor Fred Watson
10:53 - Bill asks question about whether dark matter can move through space
14:55 - Why does everyone who lives in Florida call it the great state of Florida
15:58 - Brady from Florida asks how planets form their atmospheres
19:15 - If you have questions for Space Nuts, go to our website
For more Space Nuts, including our continually updating newsfeed, visit our website at spacenutspodcast.com. Follow us on social media at SpaceNutsPod on facebook, X, YouTube Music, and TikTok. We love engaging with our community, so be sure to drop us a message or comment on your favourite platform.
For more Space and Astronomy News Podcasts, visit our HQ at www.bitesz.com.
Become a supporter of this podcast: https://www.spreaker.com/podcast/space-nuts/support. Other supporter options can be found on our website.
Stay curious, keep looking up, and join us next time for more stellar insights and cosmic wonders. Until then, clear skies and happy stargazing.
Join Andrew Dunkley and Professor Fred Watson in this engaging Q&A episode of Space Nuts, where they tackle a variety of intriguing questions from listeners. From the protection of the moon to the sounds of extraterrestrial liquids, this episode is packed with fascinating insights and cosmic curiosities.
Episode Highlights:
- Protecting the Moon: Mikey from Illinois asks about the measures in place to protect the moon from catastrophic asteroid impacts and what would happen if the moon were significantly altered.
- Sounds of Titan: James from Minnesota wonders if the lakes and rivers on Titan would sound similar to those on Earth, given the differences in atmospheric pressure and liquid composition.
- Dark Matter Movement: Bill from San Francisco Bay Area inquires about whether dark matter can move through Space and be influenced by gravitational events.
- Formation of Atmospheres: Brady from Florida asks how atmospheres are formed on planets, transitioning from a ball of rock and lava to having a gaseous envelope.
00:00 - This is a Q and A episode where we answer your questions
01:25 - Fred and Andrew ask what would happen if an asteroid hit the moon
06:20 - Extra solar might come through. Yes. The thing is, the bigger the object is
06:58 - Next question comes from James Greenfield with Professor Fred Watson
10:53 - Bill asks question about whether dark matter can move through space
14:55 - Why does everyone who lives in Florida call it the great state of Florida
15:58 - Brady from Florida asks how planets form their atmospheres
19:15 - If you have questions for Space Nuts, go to our website
For more Space Nuts, including our continually updating newsfeed, visit our website at spacenutspodcast.com. Follow us on social media at SpaceNutsPod on facebook, X, YouTube Music, and TikTok. We love engaging with our community, so be sure to drop us a message or comment on your favourite platform.
For more Space and Astronomy News Podcasts, visit our HQ at www.bitesz.com.
Become a supporter of this podcast: https://www.spreaker.com/podcast/space-nuts/support. Other supporter options can be found on our website.
Stay curious, keep looking up, and join us next time for more stellar insights and cosmic wonders. Until then, clear skies and happy stargazing.
WEBVTT
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Hi there, thanks for joining us yet again on Space Nuts.
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This is a Q and a episode where we answer
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your questions. You ask the questions, we as in the
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Royal we as in Fred answers them. We should do
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it the other way around. One day we ask you
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the questions why don't you get a job for a starter.
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But anyway, coming up on.
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Coming up with this, we're going to answer questions about
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protecting the moon, the sound of liquids on other worlds,
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interesting dark matter movement, shocker dark matter question, and how
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atmospheres are formed.
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That's all coming up on this episode of Space Nuts.
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Fifteen in Channel ten nine ignition Space Nuts side or three.
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Two Space Nuts.
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As can I report it?
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Neils good.
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One man who's got a job is professor friend, what's
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an astronomer at large?
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Unlike me, I don't work anymore. I've chucked at all.
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This is not a job. This is fun. This is
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a hobby.
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Hi Fred, Yeah, it's fun for me. Excuse me, it's
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fun for me too. But you're right, I do have
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a job. And yes, there we go.
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Yes, now we have got a lot to get through,
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so I think we'll just plow straight into it and
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our first question comes from a regular sender in Erra.
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His name is Mikey Andrew. It's Mickey once again way
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too Hot Illinois.
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Got a question for you, guys.
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I know we have like a planetary protection for incoming
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asteroids that threatened Earth, but do we have the same
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thing for the Moon, Like what it a genormous asteroid?
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Where to hit the Moon and blow it the smitherenes
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or knock it our course or alter it in some
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huge wacas. The Moon is very important to the lake
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on Earth, right, So I guess first of all, what
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would happen if something happened to the Moon, would we
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still have a good chance of surviving? And secondly, is
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there a protection plan in place? Like there is ready
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Earth for the Moon?
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Thanks guys, love the bad guest. Thanks.
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Mikey always asks interesting questions. The answer is no, and yes.
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Well it is yeah, yeah, we've we've had questions about
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the loss of the Moon before and what might happen
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to us?
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And I do believe that we have discussed.
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Maybe once or twice, that the protection of the planet
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includes the Moon.
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We realize that we.
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Can't just protect ourselves, We've got to protect the Moon. Otherwise,
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you know, if it gets obliterated.
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We're in big trouble.
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Yeah, okay, so obliterated that would have to be a
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huge j object.
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That's the point. There's nothing there's no scenario that we
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can envisage at the moment that would involve such a collision.
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So we're talking about asteroids. You know, even something measured
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in kilometers hitting the Moon would be of concern to
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us because the Moon's very close to the Earth, and
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you know, that's one of the things that we need
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to know about. So the bottom line is that our
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protection of Earth in terms of it's not actually planetary
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protection is something slightly different. That's a biological thing. Planetary
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defense is what we're talking about, and defending the Earth
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effectively means we defend the Moon as well in the
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sense that if we are looking for hazardous objects, and
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that's you know, that's a well established technology which we're doing.
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We think we've discovered most of the objects that might
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threaten Earth and the Moon which are more than a
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kilometer in size. It's the objects of a few hundred
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meters that we're looking at now.
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Now.
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The detection of those is parcel of modern astronomy. And
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we find them with regularity. If one was on a
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collision course with the Earth, then we'd do something about it.
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And we've discussed that before many times, andrew.
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Is the theory of deflection. Yes, indeed, it was a.
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Dark mission, that's right. But if one of them was
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shown to impact the Moon, we wouldn't do anything about it.
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I think we would let it happen because it's just
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part of the natural cycle of events. And unless there
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was a threat to humans on the Moon, you wouldn't
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do anything about it. And in fact, if you knew
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enough about such an object going to hit the Moon,
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you bring your humans back, you get them off them,
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because that's a lot easier than trying to deflect an asteroid.
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So it's that, you know, the lunar defense is basically
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wrapped up within planetary defense of the Earth, with the
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one exception that we would not try and define deflect
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an asteroid. If one of any particular size was shown
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to be targeting the Moon.
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It gets hit a lot anyway, doesn't it.
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That's right.
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Yeah, it's getting and because there's no atmosphere on the Moon,
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you know, they get clouded. The Moon gets clouded much
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more forcefully than the Earth does by these incoming objects. So, yes,
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it's a work in progress. It's happening all the time,
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and sometimes there's interesting physics involved. You know, if you
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can see the flash of an impact in meteor or asteroid,
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then you've got you've got a new new data to
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look at and to work with.
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If something was big enough to destroy the Moon, we
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probably wouldn't have a prayer of stopping it anyway, would we.
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No, we wouldn't. There isn't anything, So it's okay.
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Yeah, well, well not within our solar system. But maybe
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you know, maybe something that's extra soul might come through.
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We've had a couple of those over the years.
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Yeah.
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The thing is, the bigger the object is, the easier
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it is to detect. And you know, there's just nothing
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on the horizon even of that kind of.
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Although the Moon being made of cheese would absorb and
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impact quite easily.
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Unless it was a particularly hard chadder that might that,
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you know.
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Yes, so that's a point.
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Yes, yes, all right, I can think of a few
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cheese puns.
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But let's move on. Thanks Mikey, good to hear from you.
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Our next question comes from somebody else, and I've actually
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managed to lose it here we go. I don't know
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how that happened. Thank you Windows, gooday Fred and Andrew.
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As a native minnetonin Minnesotan, Minnesota, all right, Minnesotan, I
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quite enjoy taking holiday time along the north shore of
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Lake Superior. I love the sound of the waves washing
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onto the shore, and that got me to thinking about
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lakes and rivers on Titan. Would they sound comparable to
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what we have on Earth, or because it's not water,
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would there be some kind of distinctive difference to the
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sound of the liquid ethane methane interacting with its surroundings.
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I realized this is probably out of Fred's area of expertise,
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but that's par for the course here on space Nuts.
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Thanks very much, Gods from James Greenfield. Yeah, James asks
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an interesting question because we've talked in the past about
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different types of suns and if life existed on work
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surrounding those suns, you know, the trees might have different
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colored leaves and things like that. But I would imagine
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also that sounds on other planets and other moons would
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vary depending on the conditions, would they not.
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It's it's yes, they would, and there's two things at
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play here. First of all, there's the liquid, which may
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be quite viscous. We don't really know. It's sort of oily.
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It's a hydrocarbon. We know what liquid hydro carbons are
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like here on Earth. But there might be you know,
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compounds within it that make it a bit more viscous.
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We think we covered the story not long ago that
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suggested that if you look at the shape of the
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lakes on Titan, you can tell that there are waves there,
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wind blown waves.
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Yeah, that's right, And.
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But the likelihood is they're not very high, because radar
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reflections from Titan's seas are very very smooth indeed, and
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so I mean, I've read some papers that suggest that
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the waves are only millimeters high, which probably wouldn't make
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much noise. The other thing, though, that is the atmosphere,
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which is a different pressure from our atmosphere on planet Earth.
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One point five bars is the atmospheric pressure there, and
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so it basically is fifty percent higher than our atmospheric
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pressure here. So that's going to change the speed of sound,
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it's going to change the way things sound. It's really
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hard to imagine what the waves on Titan might sound like.
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And I think, James, pose is a really interesting question.
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There'd probably be a way of working it out though,
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if you really needed to know that.
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There would be, but it will do a simulation if yeah,
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if needed, But theories theory would help as well.
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It would also change the picture of your voice, wouldn't it.
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Yes, probably hello and joining you.
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Yeah, well you'd probably be going hell and that'd be
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the end of that. Yeah, but yeah, everything would probably
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be different in one way or another. So yeah, definitely, James,
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would you would have a different sounding liquid scenario on
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somewhere like Titan and any other place with liquid surfaces?
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Good to get your question, Thank you, James. This is
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Space Nuts Andrew Duncley with Professor Fred what's a Let's
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I've got everything.
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My favorite of all is the cross platform Password Manager.
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This is a really great product and I've talked about
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it many times, but Yeah, you can find out more
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at this urlnrdvpn dot com slash space nuts. Check out
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their prices, check out their packages, check out.
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What you need, and go accordingly.
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Of course, the longer you sign up for, the lower
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the price gets. On a monthly basis, Yeah, very much
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worthwhile and an extra four months, so a great deal
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for space nuts listeners. Nord vpn dot com slash space
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nuts have a look today and get the deal.
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Now back to the show.
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Okay, well take your space nuts.
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To our next question.
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An audio question, This one, Fred comes from Bill.
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All right, this Bill, San Francis, Kobe area.
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My question is.
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Could dark matter travel through space? So dark matter that apparently.
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Doesn't interact with other things through gravity, So could don't
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matter get thrown around or out of a galaxy due
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to other gravitational efense kind of like planets and other stuff?
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Does?
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That's my question? Love the show, Thanks, thank you Bill.
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Bill from a very watery part of the world as well,
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San Francisco Bay. It would have some sloshy sounds around it. Indeed,
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dark matter, we did talk about it recently in light
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of the fact that they discovered that it may well
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interact with itself. But that's not what he's asking. He's
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asking about dark matter movement. Can it Can it move around?
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We also, I think, discussed that it seems to concentrate
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around galaxies and in places of saturation, I suppose of
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other objects.
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So it's an interesting question.
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That's right. So dark matter basically is where normal mutter is.
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