Pluto nearly fills the frame in this image from NASA's New Horizons spacecraft. The image was taken on July 13, 2015, when the spacecraft was 476,000 miles (768,000 kilometers) from the surface.

The James Webb Space Telescope (JWST), operated by NASA, has uncovered intriguing new details about Charon—Pluto’s largest moon—including the presence of previously undetected surface chemicals. This ...

NASA’s most recent photos of Pluto, captured by the New Horizons spacecraft, have revealed some of the most intriguing and unexpected discoveries yet. Despite Pluto’s distance from the Sun and ...

Images of Pluto captured by NASA's New Horizons mission have revealed a new surprise: ice volcanoes. The spacecraft performed a flyby of the dwarf planet and its moons in July 2015, and the ...

NASA's New Horizons probe flew closer to Pluto than any Earth-craft ever has Tuesday, sending back amazing photos of the dwarf planet.

NASA explains Pluto's newly discovered blue sky and whether or not potential astronauts could ever witness an Earth-like sunrise.

Two years after New Horizons' historic flyby of Pluto, NASA has released detailed new imagery of Pluto and its largest moon.

The White House bid to terminate NASA’s fantastical flights of exploration “across the solar system” threatens to decimate American leadership in space discoveries.

NASA's New Horizons spacecraft photographed Kerberos and Styx -- the smallest and faintest of Pluto's five known moons -- which had only been discovered in the last four years.

This breathtaking video from NASA's New Horizons spacecraft shows what it'd be like to land on the dwarf planet.

For decades, Pluto remained one of the most mysterious objects in our solar system, until July 14, 2015, when NASA's New Horizons spacecraft became the first mission to visit it up close ...