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New Scientist

Pluto has an underground ocean kept warm by a layer of gassy ice

20 May 2019, 16:00 UTC
Pluto has an underground ocean kept warm by a layer of gassy ice NASA

We think that Pluto is hiding a liquid ocean, but why it hasn’t frozen is a big mystery. Now it seems that gas trapped inside the bottom layer of its icy outer shell may be keeping it warm.

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