When NASA's New Horizons spacecraft sped by Pluto in 2015, it revealed an incredible world of ice and haze carved by various geological processes — hinting that an ocean may have played a role in the ...

NASA's administrator wants to reclassify Pluto as a planet, reigniting a 20-year controversy over its status in our solar ...

A 10-year-old’s passion for Pluto has caught the attention of NASA thanks to a compelling, viral letter on social media.

Known as Planet X ahead of its discovery, Pluto has five moons, namely, Charon, Styx, Nix, Kerberos, and Hydra. The name Pluto was suggested by an eleven-year school girl Venetia Burney from Oxford in ...

Debate has raged for two decades over whether Pluto should be considered a planet. Some want President Trump to take action ...

The discovery of another moon around Pluto is exciting news for planetary science, but it's also likely causing some anxiety for the team in charge of New Horizons, a spacecraft set to be the first ...

After a 10-year-old wrote to NASA begging for Pluto to be re-instated as a planet, Administrator Jared Isaacman appears to be ...