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

Hundreds of people who love the little planet that was dissed, gather every year in the Arizona town where Pluto was discovered. They celebrate scientific discovery, history and our solar system’s ...

If Kirby Runyon has his way, Pluto will regain its standing as a full-fledged planet. Promoted into the planet club along with it: about 110 miscellaneous rocks, dwarfs and roundish celestial bodies ...

Pluto did in fact both bend and accelerate the trajectory of New Horizons when the spacecraft reconnoitered the dwarf planet in 2015, but only very slightly. There are three reasons the trajectory ...

The search for life beyond Earth has reached a fever pitch, with possible locations to find even microbial life being Mars, Jupiter’s moon Europa, Saturn’s moons Titan and Enceladus, Neptune’s moon ...

Preface: Inside the farthest exploration in history -- Introduction: Out of lock -- Dreams of a grand tour -- The Pluto underground -- Ten years in the wilderness -- The undead -- New Horizons at last ...

Space exploration relies heavily on the interest of the public — the voters, and taxpayers, who are ultimately footing the bill. But that support and excitement can be fickle. When space missions go ...