This cutaway image of Pluto shows a section through the area of Sputnik Planitia, with dark blue representing a subsurface ocean and light blue for the frozen crust. Disclaimer: AAAS and EurekAlert!

Although previous images showed that something was happening ... astronomers thought Pluto was too old to have retained enough heat energy to have these processes occurring. It might mean all ...

In this series of old family photos, follow the trajectory of my father's remarkable career, which, in its way, began and ended at Pluto. Or will end, 'round about the year 2015.—Alden Tombaugh ...

Color maps like these will help scientists figure out the molecular make up of the ice on Pluto and Charon and how old some of their surface features (like craters) are. The image reveals that ...

Gender: Male Age: 1 year 7 months Weight: 51 pounds Species: Dog Breed: Rhodesian Ridgeback – Brown Orphaned Since: April 9 ...