A huge asteroid crash permanently altered Jupiter's biggest moon Ganymede. 'Completely removed the original surface,' scientists say

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A colossal asteroid slammed into Jupiter's largest moon Ganymede with so much power it dramatically and permanently reoriented the moon roughly 4 billion years ago, new research suggests.

A huge asteroid crash permanently altered Jupiter's biggest moon Ganymede. 'Completely removed the original surface,' scientists say : Read more