Saturn’s rings are one of the most striking celestial features in our solar system. The Pioneer and Voyager probes gave us our first close-up look. More recently, NASA’s Cassini mission spent more than a decade studying them and the planet they encircle, before ultimately diving between the planet and its rings to take the most detailed measurements to date.
But despite everything we’ve learned about the rings, unanswered questions abound. Chief among them is one of the simplest you can ask: How old are Saturn’s rings?
