Why is Enceladus one of the best places to look for life-supporting chemistry?
Quick Answer
Its south polar geysers喷 out water-rich plumes from a subsurface ocean, carrying salts and organic compounds into space.
The Full Story
Enceladus, a small moon of Saturn, surprised scientists when Cassini discovered jets of water vapor and ice erupting from its south pole. These plumes come from fractures nicknamed tiger stripes, which connect to a subsurface ocean beneath the icy crust. Cassini also detected salts, complex organic molecules, and evidence of hydrothermal activity, all of which are important ingredients for habitability. The moon is tiny, but tidal heating from Saturn keeps it active enough to vent material into space. That makes Enceladus one of the Solar System’s most compelling astrobiology targets.
Key Facts
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"A tiny Saturn moon shooting ocean water into space—why scientists are excited."
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