Far beyond the edge of the solar system, Pluto is revealed as a far more dynamic and mysterious world than once believed.

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, ...

Among the quirky characteristics of this distant dwarf planet are its moons and the way they orbit Pluto – or to be more precise, the way they don’t. They all orbit a point ou ...

That was exactly the case when US astronomer James Christy was reviewing photographic plates of Pluto at the United States ...

The New Horizons mission to Pluto isn’t rewriting the textbooks, says NASA spokesman Dwayne Brown. “It is writing the textbooks,” he said, as he closed a Friday press briefing with mission scientists.

(Los Angeles-AP) June 21, 2006 - The newest kids in the solar system now have proper names: Nix and Hydra. The pair of moons orbiting Pluto were officially christened last week by the International ...

MOUNTAIN VIEW – Eight months after its encounter with the New Horizons spacecraft, Pluto continues to surprise the scientists who study this distant world. Pluto and its largest moon Charon comprise ...