Science
Related: About this forumSharks are older than Saturn's rings
Saturn's rings are much younger than we thought.
by Mihai Andrei May 17, 2023
Edited and reviewed by Zoe Gordon
Some 450 million years ago, the world was a very different place. Invertebrates, namely mollusks and arthropods, dominated the oceans. The first land plants were just emerging. Trees didnt exist. Dinosaurs were 230 million years away. In the seas, a group of jawed fish were just emerging. These fish, which we now call sharks, would stay at the top of the food chain to the current day, dominating ecosystems and withstanding some of our planets most devastating extinctions.
Sharks probably didnt have telescopes and presumably, they didnt care much about the night sky. But if they did, and had looked at Saturn, it would have looked very different than it does today. Specifically, it wouldnt have had its distinctive rings.
If you thought this was about sharks and life on Earth sorry about that. Its about Saturn and its rings. The iconic rings werent always there. The rings are basically billions of particles of ice, remnants of comets, asteroids, or other things that broke up before they reached Saturn and were kept in place by the planets powerful gravity.
But these pieces of ice are also polluted by other types of material. While this only makes up less than 2% of the rings volume, it can offer clues as to how the rings formed.
More:
https://www.zmescience.com/science/sharks-are-older-than-saturns-rings/
Effete Snob
(8,387 posts)...that God liked it, so he put a ring on it.
Easterncedar
(3,534 posts)Easterncedar
(3,534 posts)I love what that adds to my sense of time.