Hubble captured what was, at the time, the most detailed image of the dwarf planet. The result ... changed our understanding of Pluto. The first high-resolution images showed an alien world ...

Whether Pluto is officially a planet is the least interesting thing ... providing the first high-resolution images of its complex surface features and atmosphere. One of the most memorable images ...

A New Horizons image of Pluto and its moon Charon revealed more surprises about the dwarf planet and its orbiting moon. Click on the hand to see why Pluto and its moon have shaken things up.

A blue atmosphere, smooth areas, and youthful mountain ranges - this dwarf planet is full of surprises. When NASA's New Horizons probe flew past Pluto in July 2015, the images it returned astonished ...