A head-on collision between two Jovian moons would create a crash so large it would be visible from earth
https://www.theguardian.com/science/2018/jul/17/astronomers-discover-12-new-moons-orbiting-jupiter
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A head-on collision between two Jovian moons would create a crash so large it would be visible from earth
But....there could be signs of life on them!![]()
That would be quite a spectacle.