NASA's Next Great Observatory Could Spot Oceans on Distant Worlds
Dozens of them have been in the habitable zone of their parent stars, where, at least in theory, they could host an ocean.

Dozens of them have been in the habitable zone of their parent stars, where, at least in theory, they could host an ocean.

Dozens of them have been in the habitable zone of their parent stars, where, at least in theory, they could host an ocean.
We've never definitively found a liquid ocean on another planet.
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Dozens of them have been in the habitable zone of their parent stars, where, at least in theory, they could host an ocean. We've never definitively found a liquid ocean on another planet.
We've never definitively found a liquid ocean on another planet.
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