Prepare yourself—the Pluto debate has returned, and people are not going to be able to shut up about it. Pluto ...

Talk about a change of heart. Sputnik Planitia, the icy plain that forms part of Pluto's "heart," has dramatically ...

Time for a Throwback Monday (^TM). Remember a little over a year ago, when our best view of Pluto looked ...

Almost a year after the New Horizons spacecraft buzzed by the dwarf planet, we're still learning amazing ...

The latest view from the far reaches of the solar system is a cold one. Today, NASA released a new image of Pluto, ...

Pluto is