Pluto has Ice Mountains, Charon is Active: New Horizons

Little Pluto, smaller than Earth’s moon, has a least one giant mountain range, with water ice the only available building material.

Published On 07/15/2015
5:20 PM EDT
Remarkable new details of Pluto's largest moon Charon are revealed in this image from New Horizons' Long Range Reconnaissance Imager (LORRI). | NASA