this post was submitted on 12 Mar 2025
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Summary

Astronomers have discovered 128 new moons around Saturn, bringing its total to 274, far surpassing Jupiter’s 95.

The moons, formally recognized by the International Astronomical Union, are small, irregularly shaped objects detected using the “shift and stack” technique.

Scientists believe they are remnants of larger celestial bodies shattered by collisions within the last 100 million years.

The discovery sheds light on the early solar system’s chaotic history and could help explain the origins of Saturn’s rings. Meanwhile, ESA’s Hera spacecraft will conduct a close flyby of Mars’s moon Deimos.

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[–] lucg@lemmy.world 1 points 15 hours ago

Are the 128 moons new, or newly discovered?

within the last 100 million years

Ah, it's both!

[–] Chef@sh.itjust.works 43 points 3 days ago (1 children)

Great. More places for the protomolecule to hang out.

[–] SolidShake@lemmy.world 7 points 3 days ago (3 children)

I've seen the expanse 3 times and I'm STILL confused how the protomolecule tjrns frona fungus type thing monster to a wormhole gate lol. Maybe the books will explain it better.

[–] MrPoopbutt@lemmy.world 4 points 2 days ago

It basically needs critical mass.

The monsters were humans trying to engineer with thr molecule, that sample of protomolecule was not bound to become the ring.

On Eros, it was let loose specifically so that it could get enough mass to do what it was going to do. Think of it like a transistor- a few transistors can get you a NAND gate, but a LOT of them can give you a processor.

Once it had the critical mass and went to Venus, it was big enough that it could assimilate whatever it wanted into itself and gain the necessary mass to form the ring.

[–] kreskin@lemmy.world 5 points 3 days ago (2 children)

expanse was one of the very rare instances where the show was better than the books. And in reading the books you really get the sense that they were written to be a script.

[–] CarbonBasedNPU@lemm.ee 5 points 3 days ago

I read the entire series before the show was even announced and still need to watch the show. The first two books are some of the better sci-fi I have ever read. After that its a decent into madness that felt like it had gone from science fiction to pure science fantasy.

[–] rockerface@lemm.ee 4 points 3 days ago (1 children)

The books (and ultimately the show) were based on a TTRPG idea, so, yeah, they were kind of the script. Also, you can see some D&D character archetypes show through (looking at you, Jimbo "sad paladin" Holden)

[–] kreskin@lemmy.world 1 points 2 days ago

agreed, the show really covered up some of what I felt was amateurish character development in the books. I actually put one of the books down for a bit when it occurred to me that itd transitioned to "zombies in space". I also wasnt too keen on the authors describing the belters as "hezbollah" at one point early in the series. But, at the end I liked them, they passed the time, and I was glad I had read them. Not great works of art, but a good space opera.

[–] Chef@sh.itjust.works 1 points 3 days ago

I view it like It’s a tool. Think “monolith” from 2001.

[–] dumbass@leminal.space 20 points 3 days ago (2 children)

Is Saturn just a nerd that likes collecting moons or something?

A real celestial hoarder.

[–] AmidFuror@fedia.io 7 points 3 days ago (1 children)

Saturn cheated by breaking regular moons up into many irregularly shaped moons with wonky orbits.

The truth is that there isn't a strict definition of a moon like there is now for planets. The IAU has chickened out.

https://www.livescience.com/what-is-a-moon.html

[–] funkyfarmington@lemmy.world 8 points 3 days ago (4 children)

Pluto is a planet and you will never convince me otherwise.

[–] atomicbocks@sh.itjust.works 10 points 3 days ago

Okay!

But that means you have to recite all the planets:

  • Mercury
  • Venus
  • Earth
  • Mars
  • Ceres
  • Jupiter
  • Saturn
  • Uranus
  • Neptune
  • Pluto
  • Eris
  • Haumea
  • Makemake
  • Gonggong
  • Orcus
  • Quaoar
  • Varda
  • Sedna
  • Possibly more…
[–] dumbass@leminal.space 10 points 3 days ago* (last edited 2 days ago)

Our moon could bully Pluto.

Edit:

[–] rockerface@lemm.ee 2 points 3 days ago

Then it's a 10th planet. Ceres deserves its own spot!

[–] wesker@lemmy.sdf.org 16 points 3 days ago (1 children)

They also discovered two cheeks around Uranus!

[–] crank0271@lemmy.world 7 points 3 days ago (1 children)

Kind of wild that with as far as technology has come they're just now seeing the crack.

And rich in hydrogen sulfate gas. Like your mom.

[–] SolidShake@lemmy.world 10 points 3 days ago (1 children)

When is universe sandbox 2 going to update?

[–] Cocodapuf@lemmy.world 1 points 2 days ago

An excellent question!

Ring simulations are hard though, I don't expect to see a lot in that area.

[–] robdor@lemmynsfw.com 1 points 2 days ago

Right, and I discover a new moon around earth every day.

[–] Iheartcheese@lemmy.world 5 points 3 days ago

I'd announce when I found just one but that wasn't good enough for some nerd

[–] motor_spirit@lemmy.world 3 points 3 days ago

how about some fucking modesty, saturn?

[–] CosmicCleric@lemmy.world 2 points 3 days ago (1 children)
[–] Cocodapuf@lemmy.world 3 points 2 days ago* (last edited 2 days ago) (1 children)

I believe they're called moonlets. They're tiny moons, rocks that would be large enough to be called asteroids, but floating around in the rings.

[–] Treczoks@lemmy.world -2 points 3 days ago (1 children)

"Moons". What do they count as moon? Anything they can track and identify? Anything larger than a football?

They took away Plutos planet status, but call every dirt blob a moon.