New Horizons has obtained impressive new images of Pluto and its large moon Charon that highlight their compositional diversity. These are not actual color images of Pluto and Charonthey are shown ...

A week before the historic New Horizons close-up of Pluto, NASA has released new photos and the first color movie showing strange surface detail of the "other red planet" and its largest moon. One ...

It may look a little blurry, but the bright orange-tinted circle in the middle of the photo above is the first color image of Pluto and its largest moon, Charon. The image was taken by the Ralph color ...

Pluto has long been one of the most debated celestial bodies in our solar system. Once classified as the ninth planet, it was ...

Two of Pluto's midsize moons may be made of the guts of its largest moon, Charon, new research suggests.

New color images from NASA’s New Horizons spacecraft show two very different faces of the mysterious dwarf planet, one with a series of intriguing spots along the equator that are evenly spaced. Each ...

Once the quirky underdog of our solar system, Pluto held planetary status until 2006, when it got a cosmic demotion that still stings space fans. Discovered in 1930, Pluto was the ninth planet for ...

Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune and Pluto. Many Americans grew up with this as the definitive planetary lineup and created clever mnemonic devices to memorize them in ...

You know what a planet is, right? A big round thing that orbits a star. Uh, not so fast. You know what a planet is, right? A big round thing that orbits a star. Uh, not so fast. The surprisingly ...