Night Falls on Pluto's Big Moon Charon (Photo)
Monday, January 25, 2016 - 08:03
in Astronomy & Space
Pluto's largest moon, Charon, is cloaked in darkness, with just a tiny sliver lit up by the distant sun, in a photo captured by NASA's New Horizon spacecraft on July 17, 2015, three days after the probe's historic flyby of Pluto.