Saturn’s rings are no more than 400 million years old – study

Saturn has seven rings mostly made up of countless chunks of ice, with small amounts of rocky matter.

Saturn and its seven rings (Nasa)

Saturn’s rings are no more than 400 million years old – much younger than the planet which formed more than four billion years ago, according to physicists.

Researchers used data gathered from Nasa spacecraft Cassini, which was destroyed via a controlled crash in 2017, studying the grains of rocky material that pass through the solar system.