Why Does Earth NOT Have Rings? The Roche Limit Explained
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We all know Saturn has planetary rings, but other planets have them too. Where they come from? How are gravity and tidal forces involved? What is the Roche limit? Let's find out.
Nick Lucid - Host, Writer, Editor, Animator
Nora Bailey - Researcher, Fact Checker
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SOURCES
History:
www.oxfordreference.com/displ...
www.britannica.com/science/Ro...
www2.jpl.nasa.gov/saturn/back...
www.nasa.gov/multimedia/image...
Articles and Info:
www.nasa.gov/feature/goddard/...
solarsystem.nasa.gov/news/813...
solarsystem.nasa.gov/news/794...
www.esa.int/Science_Explorati...
www2.jpl.nasa.gov/saturn/faq....
www.nasa.gov/audience/forstud...
www.planetary.org/articles/20...
www.planetary.org/articles/ho...
skyandtelescope.org/astronomy...
Books:
"An Introduction to Modern Astrophysics," Carroll and Ostlie (2007)
Scientific Papers:
doi.org/10.1111/j.1365-2966.2...
doi.org/10.1017/9781316286791...
doi.org/10.1126/science.abn1234
doi.org/10.1038/35089010
doi.org/10.1016/j.icarus.2010...
doi.org/10.1016/0019-1035(90)...
articles.adsabs.harvard.edu/p...
doi.org/10.1126/science.284.5...
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Comet Lovejoy:
soho.nascom.nasa.gov/hotshots...
Cassini Simulations:
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Solar System Formation:
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People:
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TIME CODES
00:00 Cold Open
00:48 History
02:30 Earth's Moon
03:00 Mars and Phobos
03:27 Tidal Forces Explained
04:13 Why does it break apart?
05:26 Roche Limit
06:22 Assumptions
07:05 Summary
08:04 What if Earth had rings?
08:35 Sponsor Message
09:42 Featured Comment
Пікірлер: 526
This explanation of tidal forces and the Roche limit really rings with me.
@ScienceAsylum
11 ай бұрын
😆
@sirmongrel511
11 ай бұрын
It wasn't too big a stretch to follow along.
@Anklejbiter
11 ай бұрын
these puns are really starting to fall apart
@crimzenwoffinden9973
10 ай бұрын
@@ScienceAsylumhey I got a question, if space is expanding then what's it expanding into; what is on the outside of space. If it's nothing but space then shouldn't there be an always has been situation on the size of space? Maybe the expansion is just because matter and things hasn't always been around?
Woa.... I'm only 41 years old and we didn't know that Neptune had rings when I was born!! 😲 It's easy to forget that science is STILL happening!
@ScienceAsylum
11 ай бұрын
Right?! So many things we take for granted now in science are much more recent discoveries than we imagine.
@Walthanar
11 ай бұрын
40 yo here and that was my same exact reaction 😂
We have rings of techno rocks orbiting the Earth.
@blackmewtwo3569
11 ай бұрын
The satellites?
@nugboy420
11 ай бұрын
Lol techno rocks. Boom boom boom chicka chicka
@Broockle
11 ай бұрын
@@blackmewtwo3569 The moon is a satellite 🤓
@lemagicbaguette1917
11 ай бұрын
@@Broockle did satellite first describe natural bodies or orbiting spacecraft? Serious question, btw
@Broockle
11 ай бұрын
@@lemagicbaguette1917 Just anything in Orbit. A falling rock is a satellite until it hits the floor 😆
That beginning Big Bang joke never gets old! 😂
@ScienceAsylum
11 ай бұрын
😂
I'd be cool if you made a video on Saturn's moons. The closer you stare, the more physics you find behind the cosmic beauty
We were missing you Nick. Please keep uploading great videos as this one.
@ScienceAsylum
11 ай бұрын
We've come up with a plan for the second half of the year that should allow for more videos than usual.
@iamjimgroth
11 ай бұрын
@@ScienceAsylum Quality before quantity. That's what I'd prefer anyway. 😅
@ChinnuWoW
11 ай бұрын
@@iamjimgroth They always are and will be of great quality.
@ScienceAsylum
11 ай бұрын
@@iamjimgroth Don't worry. I'm not saying I'm going to start putting out crap or anything. It's just that not all topics _require_ the same amount of effort or time. I'm trying to be better at knowing when to stop "perfecting" a video (because, at some point, there are diminishing returns and I'm wasting time/effort).
@iamjimgroth
11 ай бұрын
@@ScienceAsylum it can even be negative returns if you don't know when to stop. Btw, that rock on the surface analogy was awesome. I've always had a hard time explaining tidal forces, but now I think I can. 😁
I come for the science! I stay for the humor! Actually chuckled when voyager flew by and the "wheeeeeee!". Keep it up and look forward to another 10 years!
Can you imagine the night sky with rings? Not like I could see it anyway with all the light pollution. I'm lucky if I see a star!
@ScienceAsylum
11 ай бұрын
If you can see the Moon, then you could see the rings. During the day, even!
@whoeveriam0iam14222
11 ай бұрын
can you imagine space travel with bands of debris around the equator
@davidvavra9113
11 ай бұрын
I live under the clouds west of Seattle, the stars are a myth
@ScienceAsylum
11 ай бұрын
@@davidvavra9113 😆
The molecular forces part blew my mind. I was about to ask just that. Thank you for giving us the complete picture, Nick 😊
@ScienceAsylum
11 ай бұрын
Yeah, I was reading about it and was, like, "Wait, what?! Weird."
@feynstein1004
11 ай бұрын
@@ScienceAsylum Btw I just realized. Tidal forces can also be thought of as a tug of war between the gravity of the planet and the gravity of the satellite. Wait, I'm pretty sure you said something similar in your video on Lagrange points. An object halfway (gravitationally) between the moon and the earth would be equally pulled in both directions and thus remain motionless. It's the same pattern. Except that the object is well, the part of the moon closest to the planet. It's being pulled in two opposite directions: upward toward the planet and downward toward the moon. I was wondering about this apparent contradiction regarding how gravity can tear things apart when it's only attractive. Turns out, when you have different centers of gravity (pun intended), you can get ripped apart if you get caught in the middle. This also explains why once the moon disintegrates into rings, it becomes stable. The orbiting particles no longer have self-gravity and thus there is nothing to oppose the gravitational pull of the planet. Hmm but wait. If self-gravity is the cause of tidal force, then how can people get spaghettified near black holes? People aren't held together by their own gravity 🤔
Fantastic video. I had only ever heard of the rigid Roche limit before, so it was really interesting to hear about the elastic limit.
Always a highlight of the day when there's a new science asylum video! Thank you for what you do sir!
This is an epic video that is sadly underrated. I watched again and just got my 10 year old to watch. He's also a fan of yours. You're the best teacher
@ScienceAsylum
4 ай бұрын
Glad you enjoyed it! 🤓
Very good explanation of planetary rings, satellites, and the working of the Roche limit. The details of Saturn Ring gatekeepers is an important detail added to the lecture. Thanks, Anthony
Great video. I didn’t know before that Saturn’s rings will disappear one day. Love the videos with the time line. Also quite liked the voyager sound effect 😊
Makes you wonder if our moon had a major impact that makes a temporary ring structure, which in turn would block a ton of sunlight, plunging us into an ice age...
@cyrilio
11 ай бұрын
This might explain the ‘great dying’. Besides a gamma ray burst I don’t think there are any good hypotheses for the cause.
@Benson_aka_devils_advocate_88
11 ай бұрын
@@cyrilio I would think there may be traces of it in the geologic record. But has anyone taken a look? That's what popped into my mind.
@xx_redwood_xx9737
11 ай бұрын
Lunar rings wouldn't block out the Sun any more than the Moon already does (barring eclipses), unless they were absurdly huge.
so basically, the moon gets spaghettified and this is the same process that makes accretion disks out of stars around black Holes.
@ScienceAsylum
11 ай бұрын
Yep. The black hole version is just more extreme.
This video rings so true. Maybe if Mars finally proposed to Earth it'd finally have a ring.
@ScienceAsylum
11 ай бұрын
😂
I missed this video when it got uploaded but just heard you mention it in your recent video about KZread changes so I went back to watch it and I agree, this video is great. I hope you will be able to stay motivated (both financially and personally) to keep making videos like this one, especially cause you said you enjoyed making this one in particular.
@ScienceAsylum
4 ай бұрын
Thanks for the confirmation 🤓
as always, brilliant educational video!
Hey Nick. What if you consider a system where a planet like earth has rings but has moons that keep it in check like Saturn. That would be a cool follow up video topic. Also the rings could be pale compared to Saturn unless the rings are formed from a material similar to the moon soil.
@Broockle
11 ай бұрын
I think a better question to address this curiosity would be; what if Saturn and all it's orbital objects (moons and rings) were scaled down to earth's size. Would the orbits still function the same? I would think the rings would be much shorter lived in that case.
@kingmasterlord
11 ай бұрын
so we start capturing near-earth asteroids, mine the metals out, and put the rest in the LaGrange points and _make_ some
super interesting! great explanations!
@ScienceAsylum
11 ай бұрын
Glad you liked it 🤓
I love this channel, keep up the good work Nick!
@ScienceAsylum
11 ай бұрын
Thanks! Will do! 🤓
I love Your channel, mate!
An electron is speeding down the highway and gets stopped by a traffic cop. "Do you know how fast you were going?" asked the cop. "I have no idea." replied the electron. "You were going 98 miles per hour." said the cop. "Great! Now I am lost!" complained the elctron.
3:14 LOL... It took me about 10 seconds before I understood all the layers of that statement.
Please do a video on the spin of particles why fermions have 1/2h spin and boson have 0 or 1,2h etc. Your explanation is phenomenal. Thanks
Loved the majora's mask reference there, keep up the good work
You sir are amazing, kid-friendly, immersive content, and highly educational. Thank you! I'm now subscribed
@ScienceAsylum
Күн бұрын
I'm glad you found the channel! Welcome 🤓
I'm watching this for the second time. Love the use of the timeline. Great content!
@ScienceAsylum
4 ай бұрын
Glad you enjoyed it! 🤓
Someday soon we might have artificial rings around Earth... once a few satellites collide and their debris start a chain reaction. 😨
Your vids are wicked awesome! 😅
@ScienceAsylum
11 ай бұрын
😆 Thanks!
As usual, awesome video with your clear explanations! What do you think is going on with Quaoar's recently-discovered rings, which orbit outside of its Roche limit?
@ScienceAsylum
11 ай бұрын
There could be several reasons. Most of Saturn's rings are outside their Roche limit, but Saturn has those Shepherd moons to help keep things in place. Also, collisions can cause rings. It doesn't have be tidal disruption (like with Phobos). So it's possible a couple large rocks collided near Quaoar and we just happened to catch the rings while they're still there.
The roche limit! It sounds cool!
I have a theory. I think KZread knows you're one of my favorite creators. That's why it usually waits a day or two to show me your videos when they get posted, because the algorithm is trying to check to see how quickly I find out about your video on my own before recommending it to me. KZread uses people like me as guinea pigs to gauge what to do with the metric count. But anyways, all theories aside- this is a good upload! I've always been fascinated by rings. I remember being a kid and swearing that I saw a planet with rings in the sky when stargazing once. As an adult I can't make out the rings anymore, but at least I can recognize Saturn and Jupiter sometimes. ☺️
Cool explanation of Roche limit!
@ScienceAsylum
11 ай бұрын
Glad you liked it! 🤓
Majora's Mask lol Creepy AF got me! Also Enceladus feeds Saturns rings with water/ice eruptions constantly.
Amazing video. 6:20 deformation also affects selfgravty forces seen form the surface
@ScienceAsylum
11 ай бұрын
Good point.
Such awesomeness in this video!
@ScienceAsylum
11 ай бұрын
Thanks! 🤓
Particularly good yuks this round buddy, nice. 😁👍
@ScienceAsylum
11 ай бұрын
Thanks 👍
Excellent video!
@ScienceAsylum
11 ай бұрын
Thanks!
Loved it.
I only knew planetary rings existed, not their nature. Turns out the explanation is surprisingly simple. And yes, it would be; the distances aren't cosmology-big. :)
The downside of rings around Earth would be the reflected light providing extra heating on some portions of the globe and shadows on other portions. It would sure complicate our seasons or at least accentuate them. I'd love to hear you discuss that situation.
@qevvy
11 ай бұрын
While I'm not a big fan of geoengineering solutions to global warming, I'd totally get behind an artificial Earth ring system as a sun shade just for the spectacle of the thing. 😄
I think it's cool how you use the comic sans or similarly loose font for the mathematical expressions. It makes it more approachable, and like someone just scrawled it down in the middle of doing an experiment.
@ScienceAsylum
11 ай бұрын
I _really_ like the math font I use, but it drives some people crazy. Apparently, people have different preferences. Who knew? 😉
Love the majors mask reference! 😄 great video 👍
@ScienceAsylum
3 ай бұрын
Thanks!
Your channel is reminiscent of me watching Bill Nye The Science Guy as a youth. Though I appreciate your videos much more. Thank you for taking complex subjects and making them understandable for us simpletons.
Appreciate the humor... keep it up
@ScienceAsylum
11 ай бұрын
Thanks!
I like the story about how Galileo tried to communicate his discovery of Saturn's rings to Kepler through a coded message, only for Kepler to get it wrong and mistakenly read it as his discovering Mars having two moons.
Very entertaining video - as usual. ... You're dancing _rings_ around the other channels!
The 10:00 length of this video made me feel nostalgia
@ScienceAsylum
11 ай бұрын
I didn't do it on purpose. It just kind of... happened.
It's OK to exaggerate sizes for clarity, as long as this does not come across as a stretch. And, by the way, Earth used to have rings (and hobbits)...
@ScienceAsylum
11 ай бұрын
Keep it secret, keep it safe.
Loved this and it’s a good explanation, but didn’t get into what happens if the body passes quickly through the Roche limit such as an asteroid with an orbital trajectory intercepting Earth. In this scenario it may not break up, and even if it slightly disintegrated, all of the mass would still smash into Earth. As another example, let’s say a huge asteroid collided with the moon with enough force and the perfect angle so as to stop the moon from orbiting Earth. So if the moon was stationary with respect to Earth and started falling into the gravity well of Earth, would it break up? I mean, it wouldn’t matter because we’d still die but I do wonder… 🤔
I wonder how the fluid statellite rosche limit is calculated . Calculating the rigid one is easy but in fluid i started by taking some adsumption and did some calculation but answer was quite complex and also not correct . Can some one give the method by which its calculated it would be helpful 😊😊
Great video as always! I'm curious if that limit would exist for a star? Crazy for life!
@KohuGaly
11 ай бұрын
Yes, it is even mentioned in the video when he mentions the comet.
A Hill sphere talk would be a cool topic, maybe part of a basic orbital mechanics series. Do you play KSP?
@ScienceAsylum
11 ай бұрын
I considered making Hill spheres a side note in this video, but decided it should be its own video. (No, I've never used KSP.)
Nick: "I'm going to exaggerate sizes...which is something I've never, ever done before." Emily: ...
@ScienceAsylum
11 ай бұрын
😂
Thx for new cool video! I have question about not current viseo subject, but I think, its fine to ask here. Well, in some video about black holes you said that black holes may be form from rest mass or light. Also you said that black holes can not be form if you move rock fastly. So, where sense? Photons have only kinetic energy and it fine for form black hole. Rock have kinetic energy too, but from it uses only rest mass. Plz, explaint it moment
@ScienceAsylum
10 ай бұрын
In physics, it's often important to keep "internal" and "external" separate. Only _internal_ energy contributes to the rest mass of an object. The motion of the entire object is relative to an _external_ reference, so it doesn't count.
Liked the video just cause of the Majora's Mask reference! 10/10
So. Cool. This is awesome and I do want to one day visit Saturn's rings
I think people picture moons as being solid chunks of rock that you could throw at something and have them not break apart, like a small piece of granite. It's much more realistic to see moons as collections of small rocks and dirt that are only held together in the first place by self-gravity. After all, that's what the surface of the Earth is in most places. There's nothing keeping dirt, sand, hills, mountains, oceans, etc. on the ground, except that they're heavy and the Earth has self-gravity.
whats the roche limit for sun? and are there any planets that were at one point of time within roche limit of sun, if so where are the rings of sun? and do we see rings around other starts that have planets revolving around them?
@ScienceAsylum
11 ай бұрын
None of the planets are inside their Roche limits with the Sun, but comets have been known to pass inside it and break apart.
5:19 why does that rock starts revolving around planet instead of falling straight (directly) into it
@nerobernardino88
11 ай бұрын
Because it was already revolving around the planet, the moon is already revolving around the planet.
@ScienceAsylum
11 ай бұрын
Technically, it takes 10s of millions of years. Think of it like a time lapse: one picture every time the moon gets back to that spot in its orbit.
Did I click like before watching, or did I watch it backwards and then click like? Which way did t go?? Also, "to the timeline!!"
i have a question. consider a system of 2 equal but opposite charges, there are no other forces on them , exept their electric attraction. Now if we do work on the charges and separate them , the work we have done on them will be stored as P.E and when released the P.E turns into K.E and they both come together, right. now consider if the both charges appeared out of nothing (i know matter cannot be made out of nothing , but hypothetically say it did) would they still be attracted , cause we haven't done any work on them to turn into K.E. so is there a electric field in there. does that mean for any parcticle that already existed wont interact with it?
@ScienceAsylum
10 ай бұрын
*"Now consider if the both charges appeared out of nothing..."* This is why hypotheticals don't work. You can't break one law of physics and then ask what would happen given the other laws of physics. It's an all or nothing kind of thing.
@agneyc.m1653
10 ай бұрын
@@ScienceAsylum mmm, yeah your are right
@narfwhals7843
10 ай бұрын
You can make arguments about your thought experiment, though. A hydrogen atom has _less_ mass than the proton and electron separated. So two separated charges have different energy than two charges close together. If you are creating these charges together they will have a different energy than if you created them separately. You are going to have to provide that energy when you create the charges and that energy will turn into the potential between them. You are doing the work when you create the charges.
I know this is irrelevant but I have an urgent question. It’s more of an observation, I haven’t found anything written about about it. Is there any relation between hopf fibration and the spin and location of particles? I’d like to discuss with you
I just can't stop loving you.
Great Video! Just wanted to add that rings don’t necessarily have to form from mass being within the Roche limit. Take the E-ring of Saturn for example. This ring is made by a moon of Saturn, Enceladus, spewing large amounts of water from its geysers on the south pole into space. This creates a ring only visible when backlit by the sun, it is however still a ring, and a pretty big one at that! Quaoar, the briefly mentioned dwarf planet, has it’s rings well outside of it’s Roche limit, meaning the cause of the rings cant be explained with the Roche limit. The formation of the rings are still being disputed!
@ScienceAsylum
11 ай бұрын
Yeah, I actually put a list on the screen at 2:07
@underwatermoon
11 ай бұрын
@@ScienceAsylum oh, sorry. It seems like i missed that…
@ScienceAsylum
10 ай бұрын
@@underwatermoon Understandable. It was a very brief side note. Easy to miss.
I agreed with you I love Saturn too. Saturn is not only planet in the solar system has rings, but Jupiter, Uranus, and Neptune does has rings too. I do love space a lot. It part of my dream come true. I also love Jupiter also. Jupiter is the king of planets.
The crazy guy on the left side is more genuine to me 😂
Orbital resonance is another cool phenomena.
@ScienceAsylum
11 ай бұрын
True! But I don't think any video I make about it would be better than Steve Mould's video: kzread.info/dash/bejne/g62imJabZK-0epM.html
I don't see time as part of the equation? Presumably a fast moving object could stay intact if it's not inside the limit for very long? It seems to me that's part of why comets remain intact (usually) during a close pass.
@ScienceAsylum
11 ай бұрын
That's true. If impact happens quickly, it won't have time to break apart. That's why we discuss this in terms of moons or "satellites" instead of objects more broadly. Decaying orbits are slow.
LOl I never exaggerate size for clarity... haha, the stuff you slide in to these talks is scandalous nick! 😂😂
@ScienceAsylum
11 ай бұрын
😂
Great explanation as usual! ❤
@ScienceAsylum
10 ай бұрын
Thanks!
Nice video, I didn't know that Galileo had such a crude picture of the rings with his telescope
@ScienceAsylum
11 ай бұрын
Yep! I felt like that was an important historical detail. By giving all the credit to Galileo, we miss out on how knowledge is gained _incrementally._
Can you make a video about oceans tides because the usual explanations seems to be wrong
@narfwhals7843
11 ай бұрын
PBS spacetime have done a good video on this years ago, which Nick commented on. kzread.info/dash/bejne/oqt3ys1tg5yfmZc.html
Never walk up to a stranger and say: "I love the rings around Uranus."
@danielbickford3458
11 ай бұрын
I actually had that happen in Middle School. One of my classmates asked my teacher why is Uranus so big? Why Uranus have rings around it? Why is Uranus blue? You can guess exactly how he pronounced that. My teacher was less than amused. If I recall correctly she sent him to the principal's office
@fep_ptcp883
11 ай бұрын
But Uranus needs to be more explored and studied
Coming back to rewatch, like and comment. Let’s boost the algorithm.
Is that one of Nicole's @SoundoftheForest "It's a fancy bag" shirts?👀
@ScienceAsylum
11 ай бұрын
Yep! That's exactly what it is 🙂
They say if you cut a planet in half and count the rings, you can tell how old it is.
@ScienceAsylum
11 ай бұрын
😂
@on1yadam
11 ай бұрын
😂😂😂😂😂
why dont you make cover spintronics? I request you to cover some topics like what are spin currents, spin to charge current conversion, quantum spin hall effect, ISHE etc
Yes! More space!
Hi , can you explain why we are unable to see in swiming pool what phenomena? Speed of light change seems not enough to me
@ScienceAsylum
10 ай бұрын
Huh? I can see in a swimming pool. I'm not sure what you're asking.
👍 for the Majora's Mask reference! 🌚
I can you clarify what you explained on 4:21. You say when there is no gravity on the moon, the rock will drift towards mars. But don't you als o have to take the centrifugal force into account? Because even when a couple of rocks with n are close to a planet but have a velocity thats perpendicular to the gravitational force they can stay in stable orbit even if nothing holds them together because of the centrifugal force.
@ScienceAsylum
11 ай бұрын
The rotation _can_ be a factor, but it's usually pretty small. Moons don't usually rotate all that quickly.
How it started: trying to turn space junk into earth's rings How it's going: Kessler syndrome
Wouldn't having rings make launching satellites more difficult?
@josebarria3233
11 ай бұрын
Yeah pretty much
@sskpsp
11 ай бұрын
I imagine you can go around them
@AK-yy6yf
11 ай бұрын
@@sskpsp still, quite likely, considerably more difficult, maybe even to the point of such lack of viability/process being so resource straining, that GPS could still remain a military-only system or the luxury of the wealthiest due to sheer cost of placing the satellite in proper location and on proper course, due to: - need of "detour" ("from the path we could take if the rings were not an issue")/less favorable and more elaborate to reach and maintain final position - upkeep - necessity of considerably more durable construction - and simply calculating into the price of the current launch at least a partial cost of inevitable (likely quick to come) future replacement, because things really, truly need to be AT LEAST cost effective, preferably profitable As usual, things are all fine and dandy until potentially mundane consequences receive more than a split second of an afterthought. "So cool we have those rings that are actually pretty great to gaze upon every night, truly a marvel. Oh, look, another of our satellite missions literally went down in flames just now. A thirtieth this decade, good we're doing it all unmanned for quite some time. A shooting star, make a wish! Ahhhhhh.... Nice."
@AK-yy6yf
11 ай бұрын
Also, imagine the utterly unfathomable - in potential span and chaos - clusterf- of ancient mythology. The Sun, Moon and "Seven Stars" (or however many was in which mythical 'consciousness' at which point in time) is quite manageable (in and even without comparison) and likely less terror inducing than uncountable swarm of nearby space rocks. Quite entertaining to think how the ancients would have handled this, but I suspect that what actually happened is a more preferable scenario in this aspect as well.
@user-sl6gn1ss8p
11 ай бұрын
@@AK-yy6yf they might see it more as a veil or sky-river or something?
Make a video on Boltzmann Brain
Interesting :)
0:19 Well if we continue to dump lots of debris in space, we will get our ring eventually.
Excellent pronunciation of "Huygens"! I've been saying it wrong lo these many years.
@ScienceAsylum
11 ай бұрын
Thanks! Someone corrected me on it years ago and I've said it this way ever since.
Doctor Lucid! Long time no see! Before I watch your video.. No rings here, just you wait till we get enough basura espacial allá arriba
@ScienceAsylum
11 ай бұрын
I took a little vacation after my live stream last month. Should be back in action now though.
I'VE MISSED YOU. sorry to be gone so long
Can you imagine how hard it would be to have stable orbiting satellites if we had rings around earth?
@ScienceAsylum
11 ай бұрын
Ok, so maybe there would be practical problems.
I'd like to know more about these "unstable orbits" that destroy rings over time! Do they fall into the planet at the inner edge, drift off into space at the outer edge, or evaporate from both ends? And what's the mechanism that causes it?
@KohuGaly
11 ай бұрын
It's caused by atmospheric drag and from random collisions/flybys causing changes of orbits of individual particles.
@angeleav
11 ай бұрын
Slow falls in, fast floats out
It would be cool to see if we made our own rings for storage of resources like water and minerals for space based production and also for the beautiful night sky's we would see here on earth
It feels like rings would be more interesting, but honestly if we got used to seeing rings, we would complain we dont have a moon while pther planets do.
@KohuGaly
11 ай бұрын
One interesting fact about rings is that if earth had them, it would be plainly obvious by the naked eye that earth is a sphere. You could literally see its round shadow on the rings at night.
Curious on how the about the coefficient parts of the Roche limits was calculated and or derived.
@jamesmnguyen
11 ай бұрын
Probably a lot of calculus and approximations.
@danielbickford3458
11 ай бұрын
@@jamesmnguyen sounds about right
Only found out about this video, because of the rant in the other one. Even though I watched all your videos for years, youtube really thought this one won't be my taste.
@ScienceAsylum
4 ай бұрын
The algorithm doesn't always make the best choices... at least not what's best for either of us anyway.
Do we know the timeline on Phobos? And is it soon in terms of human lifespans?
@ScienceAsylum
11 ай бұрын
At 1:56, I mention that we expect it to happen in about 30 to 50 _million_ years... so none of us will live to see it (sadly).
@gaelonhays1712
11 ай бұрын
@@ScienceAsylum Ah. Darn it.
Sir, I have a question: How come a black hole don't "destroy" mass when it absorb regular mass? I know conservation of energy is a fundamental law, but if the majority of a proton/neutron's mass comes from the movement of the 3 quarks, then this mass should cease to exists when the quarks enter the singularity of a black hole. The mass does obviously not disappear, but can u explain why?
@ScienceAsylum
11 ай бұрын
Honestly, we don't really know anything for sure beyond the event horizon. It's possible that the singularity doesn't exist.