Juice Mission: why has the search for alien life moved to Jupiter’s moons?
Science Weekly
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The Largest Moon in the Solar System
In the 1990s, the biggest excitement for these moons of Jupiter was on a moon called Io. But Europa, just next door, had a much more icy surface layer. And then this magnetic data was suggesting that there was some kind of conducting fluid,. maybe a saline ocean sloshing around sort of inside the moon.
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