Our Solar System's Hidden Gem You Know Nothing About | Rhea

[@astrumspace]

Get NordVPN 2Y plan + 4 months extra ➼ nordvpn.com/astrum It’s risk-free with Nord’s 30-day money-back guarantee!

[@lupiusz]

Naaah

[@BackwoodsTinkerer]

Nah... I'd rather have the book I paid for several months ago

[@dphuntsman]

I purchased NordVPN; it works on my iPhone- but WILL NOT WORK here on my iPad.

[@YouCanHasAccount]

Imagine thinking MITM attacks are still possible in 2024. No, you do not need a VPN to use public wifi safely.

[@MrWeedWacky]

couldn't the strange shape and the electron density be explained by the E-ring. Since the orbit of Rhea keeps the same side of the planet in front of it's orbit, the E-ring would be deposited unevenly on one side of the planet, distorting the shape over time.

[@Tsurf]

When pictures / videos from space have to be prefaced with "the following images you are about to see are real" you just know that you're about to see some awe inspiring stuff.

[@zam6877]

And "real" is always more interesting

[@dphuntsman]

But it’s appreciated to know, in this day when, when in doubt, just assume AI…..

[@spldrong]

I spent last night with friends, listening to music on some utube channels that just showed beautiful views while the music played .... Got real dicy when the AI views started coming and at times half the room thought it was real

[@mikemondano3624]

It means they may be AI or an artitstic rendering.

[@rah5931]

NOT REAL PHOTOS. Look at 4:56 and explain how starlight comes through Rhea. Ridiculous.

[@LeBionArc]

My 1 year old daughter is named Rhea, after this moon. "A small amount of gas around Rhea is expected" - It sure is, buddy.

[@Poey12]

My daughter’s name is Rhea as well, named after the Rhea from Greek mythology that this moon is named after. We pronounce it ‘Ray-ah’ and that’s how it’s pronounced in Greek, so I always feel like people are saying the name of the moon wrong while inviting diarrhea jokes as seen in the comments…

[@elio7610]

It is a language issue, pronounciation should be something that can be determined by the spelling of a word but it can't because the English language is disfunctional and many other languages have the same issue to some extent. I am sure a lot of people will blame poor education but in my opinion it is the way we use language that is the problem.

[@cameron.t]

@@Poey12 Now I will always say diarrhea the wrong ray

[@sizanogreen9900]

I love that this series is still alive:)

[@astrumspace]

I have some more moons I want to cover soon as well!

[@felixmorar8203]

​@@astrumspaceshed light on them. They are all yours

[@Keansstuff]

@@astrumspaceplease do

[@socrabe]

​@@astrumspace it's my favorite serie! Thank you!

[@kiraalexandraruizburgos1236]

I'm so happy that you are continuing the moons of the solar system series.

[@TheGingersnapBand]

My favorite topic in all space related content! ❤

[@rheababji5657]

As a Rhea, I'm glad to have learnt so much about my celestial namesake!

[@RwnEsper]

Username checks out!

[@code066funkinbird3]

Rhea eh

[@quantumparodox]

Listen birdbrain: You’re named after a bird….

[@toweypat]

I hope you are not covered in ice.

[@mahbriggs]

​​@@quantumparodox You are the bird brain! The moon was named after the Titan goddess Rhea!

[@real-raiden-ei]

So basically Rhea is a icy moon with CO2 gas in it. Means if it has liquid warer underneath we can just add some coco cola flavoring and we will be having a soda moon

[@Cerbera66]

🤣😁

[@ThecrackpotdadPlus]

That was exactly what I was thinking :) hehe

[@Willyflan]

Mac and me?

[@limo1795]

plot twist: coca-cola comes from rhea

[@AndrewBurris-pj3wl]

Too bad coca cola can't solve water+CO2+flavor. Diet coke is nasty and I am suspicious of anyone who likes it.

[@PinataOblongata]

I hope the condition of Rhea never becomes dire. Nobody like dire Rhea.

[@masamune..]

Read my mind on this one 😂

[@schoemannh]

Daaaaaad!

[@brentstorck3589]

Boy I’m glad Rhea is still around and isn’t a goner… goner Rhea.

[@RudyArroyo-qb1hi]

HA!

[@kayned47]

Thanx for the laughs 😂😂

[@LittleBallOfPurr]

That was a rheally awesome video

[@TheWatcherxx99]

👏🏻👏🏻

[@astrumspace]

Oh wow 😂

[@smozoma]

I Cassini what you did there

[@johnathanlivingstonseagull5524]

Astro in every bunch

[@michaeljozwiak25]

😆

[@DrMackSplackem]

Some of these sequential images are fantastic. I'd seen a few of them before but I hadn't realized the sheer number taken by Cassini.

[@astrumspace]

Someone did a time lapse on KZbin of every photo taken by Cassini, and it's hours and hours long. A lot of it is very jumpy, but there are some awesome sequences like some of these of Rhea

[@rhoanjenson7475]

Agree !!

[@DrMackSplackem]

@ Wow, OK!

[@jokerace8227]

Perhaps Rhea has occasionally displayed similar geologic activity as Enceladus does currently, but given the larger orbit, weaker tidal forces, it has much longer phases of dormancy, maybe millions of years in between short outbursts of any sort.

[@permanentvisitor2460]

I think the lack of differentiation in its internal structure prevents it from retaining the sort of subsurface ocean present on Enceladus.

[@mckiem0use]

Your videos about moons are my favorite! They’re probably the most interesting objects in the solar system due to how diverse and unique they are. A shame not many talk about them.

[@dphuntsman]

I agree. Especially as a space development advocate, the moons are where it’s at, essentially. - Dave Huntsman

[@deniskapral5505]

True. I remember a BBC documentary I saw years ago about the moons, and there was one sentence I still remember: We haven't even left our solar system yet, and already we have to re-evaluate all our theories about these bodies.

[@carymiller5998]

Thanks! The information Astrum put out is always exceptional and 2nd to none. My favorite!!

[@RodneyWilson-o4k]

Sorry I see a few people are talking about the title. Remember there are people that are watching this that are just getting into space just starting to research or get to know some of the different objects in Outer space young children, etc. and often when you are researching and were looking at something only the most prevalent show up like Titan, so it’s good to hear more about the other moons after all there’s more than 100 of them around Saturn so plenty of opportunity to explore. What’s there the fact that this is such a large one and has very little channels opportunity to get to know a little something about it.and for other programs that moons over and over again and most of us know most of the details about them there’s going to be no title you can have that wouldn’t make someone go. I already know that. Because everybody knows something about that moon. But this one is a little more obscure, so thank you for taking the time to bring some of its details to light. And help the old and the young get to know some of the I objects out there even if some of them don’t get covered as much.

[@elagabalusrex390]

Well the people who don't like the wording of the title are entitled to their opinion too. It's called freedom of speech - and an alarming number of individuals seem to be forgetting that in the public forum these days, I've noticed. Most of them are on Bluesky right now.

[@zimriel]

thing is, Rhea isn't nearly as cool as Enceladus and Iapetus. Even Mimas and Hyperion have aesthetics. Rhea will be good for draining ices I guess.

[@dphuntsman]

@@elagabalusrex390There are things worth being obnoxious over maybe; titles- when such a wide variety of folks, including kids, are watching and using these- are not one of those. Prove you’re the knowledgeable, experienced adult you imply, and chill, ok? - Dave Huntsman

[@cetchathach4206]

​@elagabalusrex390 ah yes. The enlightened "everyone's opinion is equally valid". Except no. Everyone have their opinion, sure, but sometimes they're just *wrong*. And it's okay to say when they're wrong.

[@elagabalusrex390]

@@dphuntsman Okay, well I disagree with you lol. I don't have to prove anything - it's youtube, not a court of law.

[@awedelen1]

I'm glad you are covering this moon, I barely knew anything about it before this.

[@Stephan1988]

Rhea in Greek mythology is the daughter of Ouranus and Gaia. She is a Titan and the sister of Saturn (or Kronos in Greek).. She is also the mother of the Olympian Gods Demetra, Hades, Hera, Hestia, Poseidon, and Zeus.

[@uncletoad1779]

And she wrote "Driving Home for Christmas".

[@Leftatalbuquerque]

@@uncletoad1779 And she is a large flightless bird.

[@taras3702]

She sided with them during the war between Cronus and the Titans versus Zeus and the Olympian gods.

[@SuperFish40]

Love these types of Astrum vids. Keep the moon series coming please!

[@kingalex105x7]

honestly love these moon videos and hope you do more even on some minor moons in like a complication video

[@dbaider9467]

Great presentation. A moon covered in water ice could be useful in the distant future.

[@DISTurbedwaffle918]

Good thing we have a bunch of em lol

[@mal2ksc]

Rhea and worlds like it are going to be interesting in one of two ways: •If not inhabited, that's a lot of water for the taking and we humans need water more than anything but air. •If inhabited, how can that _not_ be interesting? Even if it's no more complicated than sulfur-eating bacteria, it's a chance to study another example of evolution.

[@permanentvisitor2460]

Luckily, water is fairly plentiful in our Solar System. It doesn't even need to have a source of liquid to be of value for resources if one found themselves in the Saturnian System. Ice is easier to access, as the surfaces of Enceladus, Titan and Rhea are composed of it. No deep drilling required.

[@luizotavio2116]

3:25 very interesting set of craters at the bottom left, there

[@DanielAluni-v2t]

Well, Rhea has a high albedo and an extremely overactive exosphere

[@stelampology]

Hehehehe, says my (not so) inner 12-year old!😂😂😂

[@IIIllllIIIIlllll]

Something something gonorRhea

[@about47t-rexes12]

This was a great episode, please cover more moons! Would love to hear more about the Uranus system

[@sirensynapse5603]

Hi Rhea, nice to meet you.

[@peterwright217]

top show Alex, hope to see more in the new year.

[@jordanjohn3360]

This channel is awesome

[@TheGingersnapBand]

Solar System Moons is my very favorite subject and now that I learned about Rhea for the first time it's my new favorite object in our star system. Promise to buy an Astrum print of it, if it's ever offered ;) Thank you Alex and all the Astrum team for another excellent video! ❤

[@Vodhin]

Always a pleasure to hear your voice; The cadence you bring to such poetic words in your videos is as astonishing as the worlds you are describing. You do Carl proud.

[@katiegabriel1412]

I love your videos. I didn't know anything except Rhea's name. Thank you. 😊

[@oberonpanopticon]

I always liked the images from the Cassini mission, they just feel more real than most. Like, you can tell they were taken by a camera on a spacecraft. They’re beautiful.

[@MrPhooey442]

The older I get the more amazed by the possibilities of how life originated. I also feel more and more that life isn't unique to Earth to the point I find it impossible that we are alone. I hope finding other life happens in my lifetime but I'm not counting on it lol.

[@OliverK1]

It always blows my mind when i see stuff like this. That we can see another world in such detail. The amount of tech and mathematics involved is astounding.

[@generalmarkmilleyisbenedic8895]

Im glad there arent 2 Rhea’s. Because Di-Rhea in the solar system could get pretty messy.

[@permanentvisitor2460]

Poopiter would deflect it all away from the inner Solar System.

[@roqua]

8:05 Just want to add some clarification on oblate spheroids vs triaxial ellipsoids: Earth being one of the former. As described, namely "a sphere flattened at the poles and bulging at the equator", Rhea would also be an oblate spheroid if there were no further qualification of that description and we could assume it was symmetrical along the two perpendicular axes running through said bulging equator. I'm guessing Rhea is not symmetrical in that way, and the equatorial bulge is also distorted/flattened somewhere, truly making it a triaxial ellipsoid.

[@dphuntsman]

Astrum, I for one love your overall approach to these subjects, and wouldn’t change it. I have a possible suggestion: to consider, in future, adding on a short, 60-seconds or so, short take, on what place the subject of the particular video (today, it was the moon Rhea), might have in humanity’s expansion into the solar system; i.e, space development. If you were to consider adding such a short add-on, there are (relative) experts you could consult with in doing your research for it: people like Dr Phil Metzger at the University of Central Florida; Dr Chris McKay at NASA Ames Research Center; Dennis Wingo of SpaceBilt, Inc. are three excellent folks to start with. Using Rhea as an example, the three of them have worked enough lunar, Mars, asteroid, even Titan et al development mission thought profiles that if you asked them to contemplate their navels for thirty minutes to give a first-take on what place a moon like Rhea could have/provide in a space development context, they could give an initial response that would be half-ways intelligent at the least. Just a thought. It would tie up the end of the ‘story’ that these planetary bodies aren’t just objects of curiosity and study- but might have the potential to be part of the human future. Ad Astra! - Dave Huntsman

[@3dfxvoodoocards6]

I was able to see Rhea even with my small 70/700 mm telescope. But it looks just like a star, no details visible.

[@CCXRTrevita]

too far buddy

[@xBINARYGODx]

@@CCXRTrevita not with THAT attitude

[@JayToGo]

What‘s the music before 1:13? It‘s awesome. Quite fitting for the wonders of celestral bodies.

[@WindRipples-]

Sounds like a generic royalty free track you can make online in a few min

[@grimof7035]

music in the intro + still frame slideshow makes me feel like im watching a destiny cutscene, awesome stuff as always

[@generalmarkmilleyisbenedic8895]

You cute

[@slushbilly5893]

That's no moon. It's a space station!

[@TheWatcherxx99]

A fully armed and operational battlestation!

[@bencross3759]

wrong moon, look up Mimas.

[@BartonStewart-g4n]

Great to see a space-related channel that's not eat up with UFO stuff. This is real science.

[@davidbailey453]

Loving the video. There are many many moons that I know so little about

[@keithwilson2103]

Before this video, I really had never heard much of anything about Rhea. Thanks for the knowledge.

[@emillywheaton6726]

Great footage. Thanks

[@UNIVERSOENUNACAJA]

Awesome work! 👏 those cassini images still gets me everytime

[@thenightscythe2030]

Rhea has mostly been ignored because of how far out in the E Ring it is.... it is also super likely that Saturn's Rings spread even farther past Rhea in its early years, since it is already proven the Rings have been sinking into Saturn since they stabilized... would certainly explain the Large Size and excessive Cratering

[@angelalewis3645]

What a great video! Thank you, Astrum! I love Rhea now. ❤️

[@the_south_atlantic_anomaly]

So could you melt the ice and drink the water? Use electrolysis to separate oxygen to breath and hydrogen to burn for rocket fuel and to heat your shelter?

[@Релёкс84]

That's the least of you problems.

[@ivoivanov7407]

You may need to filter it, but yes, purified water will be good for drinking and electrolysis.

[@generalmarkmilleyisbenedic8895]

Perhaps its quite irradiated as well

[@KuK137]

@@ivoivanov7407 Purified water is funnily enough not good for drinking, if it's too pure it pulls essential minerals and salts from your body leading to big health problems...

[@swamphawk6227]

Maybe way in the future we could put Rhea in a stable orbit around Venus. Seems like a nice spot for a water world. Venus needs a companion.

[@rickywinthrop]

That would throw off the gravitational resonance of the Saturn moon system as well as the rest of the solar system with potentialy massive ramifications over time. Let's just build a giant cloud station high up in the venusian clouds instead. If we give Venus life it will never be lonely again (assuming there isn't life of some kind there already).

[@ShadyCrzy]

I'm digging this analog aesthetic. Very nice!

[@AceSpadeThePikachu]

As a solar system trivia enthusiast since kindergarten, I'm embarrassed to admit I completely forgot about Rhea. Though I do really hope you do a video on another underrated moon of Saturn soon; Mimus, the Death Star moon.

[@cohutta_pines]

HER NAME IS RHEA AND SHE DANCES CROSS THE SAND!🎶🎵🎵🎶

[@dasovietunion3370]

Do Mimas next! Death Star moon must be known!

[@AndrewSkow1]

8:13 A Triaxial Spheroid is a sphere distorted on three axes. What you describe, what you show, is an Oblate Spheroid.

[@quistan2]

Little known theory. Rhea is captured ejectica from Uranus when a kuiper belt object known as Dia slammed into it.

[@michaelfritts6249]

Oops!!! 🙄😏🤣🤣

[@pe1900]

that wouldn’t make much sense to me, since it’s so similar to other saturnian moons in orbit size composition and other stuff, plus it just being simpler to imagine it not happening and rhea forming around saturn like you’d first expect. would like to know if there is good reason to think this though

[@quistan2]

@@pe1900 The Dia-Rhea from Uranus hypothesis, is just a hypothesis, but those that support it just have gut feeling about it.

[@Macachee]

@@pe1900🤦🏼‍♂️

[@PrincessDianaJ]

Ohhhh perfect timing❤

[@lukealchinsmith]

A+ Editing and subtle puns. Fantastic series❤

[@microbuilder]

I really hope in my lifetime I get to see a probe go to Europa or Enceladus, and go under the ice...gotta be one of the most intriguing things ever, I want to know whats in that water!

[@joebombero1]

The tremendous amount of radiation probes are exposed to on these moons complicates the mission greatly. It is likely even a very fortified probe would last only a few months. Another complication is how a probe melting through a hundred kilometers of solid ice would communicate to a probe on the surface. We could get into the oceans with existing technology but not be able to transmit any information back.

[@LFacts-news]

Rhea may play second fiddle to Titan, but its icy cliffs, strange atmosphere, and cratered surface are full of secrets waiting to be uncovered. What’s your theory-does Rhea have more surprises in store?

[@JayceMarble017]

8:08 maybe cause of Saturn pulling on Rhea

[@willn851]

This channel is amazing. Thank you.

[@AmeliaDíaz-l4k]

Mr. McColgan, how about a very interesting video on Saturn's fifth moon Tethys, which, just like its matrix planet Saturn, is less dense than water?

[@SirAanonym]

If Jupiter’s moon, Dia were to crash into Rhea it would be a real shitshow.

[@TheJadeFist]

The lack of rings or debris disk, or charged debris previously detected could have been the temporary result of like an eruption or an impact.

[@VoltageLP]

Fun fact - Cassini himself was named after the interplanetary space probe that visited Venus and Jupiter on it's way to orbit Saturn for 13 more years.

[@abrahamdraper1911]

I've often wondered why Rhea is so obscure compared with her more celebrated sisters... Anyway, great series, thanks for your commitment. Long may it continue!

[@commodorezero]

It might be the single least talked about spherical moon despite being in the top 10.

[@generalmarkmilleyisbenedic8895]

Because it has CO2 and thats dirty and we dont like that

[@toweypat]

I like your narration.

[@jeffreygarcia2783]

So if we crash rhea into mars and wait a few million years we got a second earth

[@pe1900]

far far too much water, mars would be like 10 kilometers underwater

[@jeffreygarcia2783]

@pe1900 that's fine ocean planet sounds cool anyway

[@jeffreygarcia2783]

Could use Olympus mons as base

[@georgewashington1621]

It is practically impossible. I mean if humanity would be able to do something like that then there would actually be no reason to do something like that. The scale of the operation, if at all physically possible, would require a civilization that operates on stellar levels of energy. A far more realistic scenario is redirecting comets to crash into Mars.

[@jeffreygarcia2783]

@@georgewashington1621 if we have enough resources to capture enough comets for an ocean, building a space hook is not that far off

[@UncleJoeLITE]

Thanks from Canberra. 🇦🇺

[@generalmarkmilleyisbenedic8895]

Say thanks again or report to those detention camps for another jab your gov is so fond of

[@srbrant5391]

Anytime I look at close photos of other planets, I almost feel like I'm there. Weightless. The abyss in every direction.

[@johnstewart579]

Thank you for this comprehensive overview of Rhea. My large telescope reveals Rhea as a distinct and obvious pinpoint of light

[@stepaushi]

1:45 That diameter does not make it roughly 1/2 the size of our moon. It makes it roughly 1/8 the size.

[@computerdores]

A 78km close flyby is crazy! You could drive that in under an hour!!

[@hikerJohn]

It's also possible some craters have dark bottoms because it came from what impacted and caused the crater.

[@YPMR286]

These days the West horizon in the night sky! An absolute epitome of ecstasy.. vertical conjunction of The Gas giant Saturn at the top n Venus at the bottom!❤❤❤❤❤❤

[@auntvesuvi3872]

Thank you, Alex! 🪐🌑🌕

[@PianoBruce]

That was really interesting! I’ll be honest I genuinely thought this could’ve been click bait but I should trust that you make good content Astrum, good one 👍

[@tu1469]

Today I learned that our moon has a hot core ! Crazy

[@Tal-q3r]

weirdo 🧐

[@bunnyfan9960]

@@Tal-q3r They aren't wrong! The moos core temperature is like 1,300 degrees from what I've heard

[@Tal-q3r]

@bunnyfan9960 et 🐮?

[@bigred8438]

Oh Alex, as we reflect on how bright Rhea's surface is. How droll.😁🤣

[@PuckLokin]

Maybe it's mass distribution is off center because it accreted debris from around Saturn preferentially on one side? If it was tidally locked during the process i could see it happening. Could explain the cliffs too, if the whole moon had to 'slump' back towards a sphereical shape as it gained mass more on one side than the other.

[@JTelli786]

I find that Saturns three twin moons are the most overlooked bodies in the solar system. Rhea, Dione, and Tythes. Truth is is that they’re just not visually appealing and they’re all very difficult to tell apart from one another.

[@HypnoPol1499]

Magical. Thank you

[@Sutairn]

does anyone else want to make rhea a moon of titan and fling them into an orbit in the astroid belt

[@andrewsarchus6036]

It seems unlikely that infalling ejecta from a previous large bolide impact would simply fill in older craters leaving no trace. Those younger surfaces look more like flows of some kind.

[@Me97202]

I learned a lot from this video. Thank you.

[@zoompt-lm5xw]

Love docus about forgotten moons and minor planets

[@Kaaba1122]

I always like to learn interesting things about worlds that i once thought were quite boring.

[@simonmcnicholas]

Love these ones 👍🏻 please do more moons 😊

[@treefarm3288]

Thanks for the informative video. Now I know a lot about Rhea (not the bird).

[@projectarduino2295]

I just read the entirety of of “2001: a Space Odyssey”, so I find it ironic that you put up a Saturn video up on the same day.

[@palantirlotr5623]

Great video as always, thank you!

[@JClouseauB_-_Jiří_Blažek]

Would be really fascinating find out that the surface ice is just a crust collected over the eons originating from other moons ejections.

[@tommy-er6hh]

• Saturn co-orbital 1 horseshoe (2013 VZ70), 1 temp trojan (2019 UO14) at L4, Has weaker than earth magnetic field but extend 500x further due to Saturn’s mass [although theory says it should not exist] with radiation belts (which vary by amount of extreme ultraviolet radiation (EUV) from the Sun and absorbed the 5 moons from Janus and Epimetheus to Tethys). The magnetic field has a flux transfer event/portal sometimes on day side where solar wind flows through. Also Saturn may enter the tail of Jupiter’s magnetic field once per orbit. Saturn has higher upper wind speeds than Jupiter. Saturn gives off more infrared light than light absorbed/reflected, and approximately 10 ½ hr rotation which gives it oblate shape. Saturn radiates 2.3x as much energy as it receives from Sun. [Saturn is in a 2:5 resonance with Jupiter.] • Many Rings mostly ice and gas about 100,000 million years old and inner rings will disappear in about 100,000 years (because of the Sun radiation, meteoroids, Saturn’s magnetism & gravity causes “ring rain” from 25 to 55 N/S latitude - which both deionized and heats Saturn’s Ionosphere in a band), they are divided & guided/shepherded by inner moons, shepherd moons Pan and Atlas have an ice tutu around them. The rings have their own exosphere of sublimated ices.. Destruction of ex-moon Chrysalis may have caused most of rings, but there are other theories. Moon Enceladus is believed to be the cause of E ring, the vast faint F ring/ghost ring that goes out to moon Titan is believed formed by old collision with moon Phoebe. Moon Titan far out does not affect the inner rings much. In addition the rings have dark seasonal “spokes” across the rings in fall and spring that may have a magnetic cause. • Janus and Epimetheus are ring shepherd moons that co-orbit each other in a horseshoe orbit around Saturn. • Mimas no cryo volcanism/geysers, but a possible underground ocean. orbital resonance 2:4 with Tethys - and it also has a 2:1 resonance with Cassini Division of the Rings. • Enceladus cryo volcanism/geysers from south pole forms a large torus that co-orbits, exosphere unknown although in the middle of “E” ring, which it creates by the cryo volcanism/geysers. These come from a warm sub surface source though cracks in the ice. Most reflective ice covered moon. Orbital resonance 2:1 with Dione causes tidal heating, tides vary from 1 to 10 meters. Arcs to Saturn’s poles cause aurora spots and “rain” around 62 south causes ionosphere heating. • Tethys with two trojan moons, 1L4 Telesto (leading) & 1L5 Calypso (trailing), orbital resonance 4:2 with Mimas, inside the “E” ring • Dione with two trojan moons, 1L4 Helene (leading) & 1L5 Polydeuces (trailing), Dione also seem active with fresh ice cliffs. orbital resonance 1:2 with Enceladus, inside the “E” ring. • Rhea 2nd largest moon after Titan, tidally locked to Saturn, ice surface inactive, with many craters, Exosphere of CO2 and O2, no magnetism, near outside of the “E” ring • Titan (96% of all Saturn moon mass, bigger than Mercury) 3-10x higher atmosphere than Earth with a cold (−290 °F, −179 °C) nitrogen/methane atmosphere with clouds/rain & 160% Earth’s pressure, has liquid ethane and methane lakes/seas, it has tides of 30 feet (10 meters) on the ice which indicates a probable under surface ocean. orbital resonance 4:3 with moon Hyperion, limit of “E” ring. • Hyperion is an irregular potato shape ice moon, no poles nor equator because it has a chaotic rotation due to 3:4 orbital resonance with Titan, which also makes Hyperion’s orbit irregular. It seems to be the remnant of a collision. It has a very low density, probably with many voids inside. • Iapetus has a ridge around equator (like shepherd moons Pan and Atlas) that maybe evidence that it had possibly a ring for a while. • Phoebe is thought to be a captured Centaur object. • 145 Moons of Saturn in total, although this may change.

[@replica1052]

(chances are moons and asteroids origin from previous planets spinning them selves to pieces - previous planets where we now find the asteroid belt and the kuiper belt )

[@zolimajster8313]

Warsaw proudly represent :D

[@generalmarkmilleyisbenedic8895]

Glory to Prussia

[@YvesPIERRU]

I have orbited Rhea many many times in Codename Mat and Codename Mat II. 😅

[@bigsarge2085]

Interesting!

[@AlOfNorway]

Rhea comes from the Albanian word ‘Re’ and is used when referring to a bride. Rhea also means new, clouds and waves.

[@SunBear69420]

I used to work at Taco Bell.. So i know ALL ABOUT Rhea... 😢

[@GeeEmming]

Awesome video, really one of the lesser talked about moons. Understandable when you consider its neighbor i suppose lol.

[@RISpaceCase]

Is that the Astroneer music in the background? Fitting.

[@BrianWould]

I can't wait until the Europa clipper arrives 🦭

[@mattbrew11]

What is that

[@AllKindsOfCoolThings]

It's going to arrive to the Jupiter system, not to Saturn

[@brick6347]

​@@AllKindsOfCoolThings🤫 don't spoil it!