Ancient Water World: Tectonics on Pluto’s Moon Charon Point to Frozen Subsurface Ocean

Charon (upper left) and Pluto as seen by New Horizons on July 14, 2015. Photo Credit: NASA/JHUAPL/SwRI

Charon is Pluto’s largest moon and despite being so cold and remote from the Sun, has been revealed to be a fascinating and active world, just like Pluto itself. Residing in the far outskirts of the Solar [...]