Physics
Cannibalistic Jupiter ate its early moons
The four giant "Galilean" moons orbiting Jupiter are the last survivors of at least five generations of moons that once circled the gas giant.
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The four giant "Galilean" moons orbiting Jupiter are the last survivors of at least five generations of moons that once circled the gas giant.
Dark patches on Titan's south pole 鈥� which were not there a year earlier 鈥� are probably hydrocarbon lakes filled up by rain