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首页月球壁纸 Pluto Hulk-like Moon Charon: A Possible Ancient Ocean?

Pluto Hulk-like Moon Charon: A Possible Ancient Ocean?

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by NASA/JPL

NASA Image Library · 公有领域（Public Domain）

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Images from NASA New Horizons mission suggest that Pluto largest moon, Charon, once had a subsurface ocean that has long since frozen and expanded, pushing out on the moon surface.

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