Advancing knowledge of Pluto’s composition has allowed scientists ... This long cycle also creates and then destroys Pluto’s very thin atmosphere, which forms during the warm (less cold ...

The relative quantities of volatile gases like methane and ethane can reveal key details about distant Kuiper Belt objects.

Factors that distinguish Pluto from the terrestrial and Jovian planets include its composition (ice, rock, and frozen gases), changing atmosphere, small size, comparatively large moon, and its ...

Scientists claim to have solved the mystery behind the heart shape on Pluto's surface, believing it was formed by the planet being hit by an object over 400 miles in diameter. This enormous region ...