On February 18, 1930, Pluto was discovered by astronomer Clyde W. Tombaugh at the Lowell Observatory in Flagstaff, Arizona. Compared with the major planets in our solar system, Pluto has had a ...

The debate over Pluto’s planetary status has been ongoing since its reclassification as a “dwarf planet” in 2006 by the ...

(FOX 13) - Scientists celebrated the anniversary of the discovery of Pluto Saturday, February 18. The celestial body most modern adults learned was the ninth planet was discovered by U.S ...

Pluto’s heart-shaped feature, known as Tombaugh Regio, has captivated scientists and the public alike since its discovery.

The famous 87-year-old telescope at Lowell Observatory that was used to discover Pluto needs to be renovated so it can seek out the dwarf planet once more.

What’s a Planet, Anyway? It was the discovery of a new body beyond Pluto in 2005 that prompted a new discussion on the definition of objects in the solar system.

Ninety years ago this week, a young astronomer named Clyde Tombaugh discovered a small, icy object beyond the reaches of the known solar system. It was Pluto. Astronomers had suspected Pluto's ...

Discovery inked its first deal for free, ad-supported internet VOD distribution in a pact with Pluto TV, set to launch select programming from six of the cabler’s networks on the platform later ...

Searching for a ring around the Pluto, scientists accidentally discovered that the former ninth planet has a tiny fourth moon, temporarily named P4.

The discovery of a new moon around Pluto hints that a NASA spacecraft streaking toward the dwarf planet could uncover more surprises when it finally gets there.

NASA Craft to Visit New Pluto Moon? Pluto's fourth moon is located between the orbits of Nix and Hydra, which Hubble also discovered in 2005.