“The New Horizons images and data surprised scientists by showing both Pluto and Charon to be complex bodies despite their small size and cold temperatures,” NASA said. Pluto may not be a full ...

“Pluto’s core is so cold that the rocks remained very hard and did not melt despite the heat of the impact,” said Ballantyne. “Thanks to the angle of impact and the low velocity, the core ...

Although previous images showed that something was happening on Pluto, with an average temperature of -240C, many people assumed it was a cold and relatively dead world. That was until NASA's 'New ...

This story appears in the July 2015 issue of National Geographic magazine. Small, cold, and absurdly far away, Pluto has always been selfish with its secrets. Since its discovery in 1930 ...

"Even if Pluto starts out really cold, which makes more sense from a solar system evolution perspective, the giant impact and the subsequent tidal forces following the separation could result in ...