In June 2015, when the cameras on NASA’s approaching New Horizons spacecraft first spotted the large reddish polar region on Pluto’s largest moon, Charon, mission scientists knew two things: they’d never seen anything like it elsewhere in our Solar System, and they couldn’t wait to get the story behind it.
NASA’s New Horizons team has discovered a chain of exotic snowcapped mountains stretching across the dark expanse on Pluto informally named Cthulhu Regio. One of the dwarf planet’s most identifiable features, Cthulhu (pronounced kuh-THU-lu) is a bit larger than the state of Alaska and stretches nearly halfway around Pluto’s equator.
The first colour images of Pluto’s atmospheric hazes returned by NASA’s New Horizons spacecraft last week — seen here backlit by the Sun — reveal that the hazes are blue. Also, in a second significant finding, New Horizons has detected numerous small, exposed regions of water ice on the dwarf planet.