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Colossal Asteroid, 20 Times the Size of Dinosaur-Killer, Struck Solar System’s Largest Moon 4 Billion Years Ago

Four billion years ago, Ganymede literally got knocked sideways. A giant asteroid slammed into Jupiter’s largest moon, ...
Gizmodo

Solar System’s Largest Moon Was Shifted by Giant Asteroid Impact, Study Says

A gargantuan asteroid impact on Ganymede, the solar system’s largest moon, significantly altered the body’s axis, according to a new study in Scientific Reports. Ganymede is a Jovian moon that is ...