Pluto’s largest moon may have gotten too big for its own skin. Images from NASA’s New Horizons mission suggest that Charon once had a subsurface ocean that has long since frozen and expanded, pushing ...
Charon is large in size relative to Pluto, and is locked in a tight orbit with the dwarf planet. A new simulation suggests how it ended up there. By Jonathan O’Callaghan Some 4.5 billion years ago, ...
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