Saturn’s rings may be no more than 400 million years old
The earliest trilobites may have evolved before Saturn donned its icy hoops
![An image of Saturn and its rings.](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2023/05/051523_no_young-saturn-rings_feat.jpg?fit=1030%2C580&ssl=1)
Saturn’s icy, ethereal rings cast a shadow on the planet in this picture captured by NASA’s now-defunct Cassini spacecraft.
JPL-Caltech/NASA, Space Science Institute