Pluto has long been one of the most debated celestial bodies in our solar system. Once classified as the ninth planet, it was ...

The New Horizons spacecraft passed Pluto on Tuesday, according to NASA, establishing that mankind — or at least one of its robot probes — has now visited the far reaches of our planetary system. “It’s ...

Pluto may have been demoted to non-planet status, but it still commands a court of five moons, as is fitting for the king of ...

Eight years after being reduced to a "dwarf planet" by the International Astronomical Union in 2006, our far distant cousin is finally getting some real push to be upgraded back to the ninth "planet" ...

NASA has released a new video showing what it might be like to land on Pluto with a brand-new view of the dwarf planet's surface. The space agency’s New Horizons spacecraft spent about six weeks in a ...

We are less than two weeks away from the 95th anniversary of the discovery of Pluto, the ice-caked, rocky sphere orbiting around 3.7 billion miles from the sun. To mark the occasion, The Lowell ...