It's showtime for Pluto. NASA's New Horizons spacecraft has traveled 3 billion miles and is nearing the end of its nine-year journey to Pluto. Sunday, it begins photographing the mysterious, ...

Pluto will complete its first orbit since 1930 in 2178, a historic 248-year space journey that spans generations of humans.

Discover the epic 9-year journey of NASA’s New Horizons spacecraft as it races through the solar system to uncover Pluto’s secrets. From record-breaking launch speeds to the first close-up images of ...

Hundreds of people who love the little planet that was dissed, gather every year in the Arizona town where Pluto was ...

NASA’sNew Horizons spacecraft has delivered extraordinary video footage showing towering ice mountains on Pluto’s moon Nix. These ice peaks, some rising as high as 11,000 feet, are made of pure water ...

Pluto has not completed a single orbit since its 1930 discovery. With a 248-year journey around the Sun, the dwarf planet will finish its first full circuit in 2178.

Pluto may no longer be classified as a planet, but in Flagstaff, its legacy still shines. Scientists, artists and community ...