Top list · 8 entries
The Solar System's 8 Ocean Worlds
Confirmed and suspected liquid-water oceans beyond Earth — the map of astrobiology's future.
Earth
The control sample
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02
Europa
Confirmed-in-all-but-name global ocean · Strong Evidence
03
Enceladus
Confirmed ocean, sampled via plumes
04
Titan
Water ocean at depth (Strong Evidence) + surface methane seas (Confirmed)
05
Ganymede
Salty ocean via aurora evidence · Strong Evidence
06
Callisto
Possible deep ocean · Hypothesis
07
Triton
Possible ammonia-water ocean · Hypothesis
08
Pluto
Possible subsurface ocean · Hypothesis
Status labels follow this site's evidence standards.