Mimas looks like one of Saturn's deadest moons: a frozen, heavily cratered ball with no obvious activity. Then scientists discovered a global ocean beneath it in 2024 — an ocean less than 25 million y

Mimas looks like one of Saturn's deadest moons: a frozen, heavily cratered ball with no obvious activity. Then scientists discovered a global ocean beneath it in 2024 — an ocean less than 25 million y — brisk.news