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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[–] [email protected] 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

[–] [email protected] 8 points 3 days ago (4 children)

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

[–] [email protected] 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…
[–] [email protected] 10 points 3 days ago* (last edited 3 days ago)

Our moon could bully Pluto.

Edit:

[–] [email protected] 2 points 3 days ago

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