The heart's brightness arises from sunlight reflection, while red patches, formed by tholins, showcase Pluto's atmospheric ...

Researchers simulate how an ancient impact left a pear-shaped dent on Pluto. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. When NASA’s New ...

Cleveland Cavaliers taking a wiser, tougher approach to a title run this season -- Terry Pluto (photos, video) Terry Pluto talks Cavaliers media day, Johnny Manziel and Carlos Santana: Podcast Talk ...

Pluto, once considered the ninth planet, was reclassified as a dwarf planet in 2006 because it shares its orbital path with ...