Pluto may soon be a planet again, thanks to a letter from a 10-year-old Texan. NASA is looking into reclassifying the former ...

Add Yahoo as a preferred source to see more of our stories on Google. Guests visting the Lowell Observatory in Flagstaff, Arizona during the I Heart Pluto Festival gaze at celestial objects from the ...

A fourth grader in Florida isn't the only one who's been thinking about restoring the ninth planet.

February 18 marks the discovery of Pluto by astronomer Clyde W. Tombaugh. The discovery reshaped the understanding of the solar system, as Pluto was long considered the ninth planet until the ...

Known as Planet X ahead of its discovery, Pluto has five moons, namely, Charon, Styx, Nix, Kerberos, and Hydra. The name Pluto was suggested by an eleven-year school girl Venetia Burney from Oxford in ...

Arizona – and Flagstaff specifically – has long considered itself the home of Pluto. After all, Percival Lowell, the namesake of the state's most prominent observatory, was not only one of the first ...

After a 10-year-old wrote to NASA begging for Pluto to be re-instated as a planet, Administrator Jared Isaacman appears to be ...

Pluto has not ceased to meet one of the basic requirements for being considered a planet. This was announced on April 13 by ...

An image of Pluto taken by NASA's New Horizons spacecraft on July 13, 2015. The planet was first discovered by Clyde Tombaugh, who graduated from high school in rural Kansas and went on to earn his ...