Hear from one of the world's leading experts on Pluto, Alan Stern, about New Horizons—a spacecraft with seven scientific instruments that will be the first ever to arrive at Pluto after its nine ...

Pluto may have been downgraded from full-planet status, but that doesn't mean it doesn't hold a special place in scientist's ...

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 ...