Charon’s surface cracked when ancient subsurface sea froze
Chasms on Pluto’s largest moon rival the Grand Canyon — and then some
![Charon's surface](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2016/02/022516_cc_charon-brief_free-rev.jpg?fit=860%2C460&ssl=1)
TORN APART Parts of Charon’s surface, seen in this image from the New Horizons spacecraft, appear to have been pulled apart, possibly by the freezing and expanding of a subsurface ocean.
NASA, JHUAPL, SWRI