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 ...

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Finally, a family portrait of Pluto is beginning to emerge! For the first time ever, astronomers have captured two never-before-photographed moons orbiting Pluto. NASA's New Horizons spacecraft ...

Discovered in 1930 at the Lowell Observatory, Pluto was demoted as a planet in 2006. Some want President Trump to take action ...

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

MOUNTAIN VIEW, Calif. — If you have ever wanted a chance to make a name for yourself in astronomy, you now have an opportunity. Astronomers who were part of NASA’s New Horizons mission have discovered ...

The International Astronomical Union (IAU) announced Tuesday that names voted on by the public had been accepted for Pluto's fourth and fifth moons. Kerberos and Styx, formerly known as P4 and P5, ...