It’s a small world after all, because today, we’re shrinking Earth to the size of Pluto. But if our planet was this tiny, how ...

CLEVELAND - Following released images of Pluto taken during the New Horizons flyby, NASA today released an animation of the distant planetoid's surface. The animation is based on images that were then ...

Charon is large in size relative to Pluto, and is locked in a tight orbit with the dwarf planet. A new simulation suggests how it ended up there. By Jonathan O’Callaghan Some 4.5 billion years ago, ...

A simple comparison of Pluto’s size with other planets, explaining why its small scale influenced its reclassification.

Finally, a family portrait of Pluto is beginning to emerge! For the first time ever, astronomers have captured two never-before-photographed moons orbiting Pluto. NASA's New Horizons spacecraft ...