The controversy endures over Pluto's true status, but the solar system underdog continues to capture hearts across the globe.

An annual event over recent years, the I Heart Pluto Festival in Flagstaff, Arizona, celebrates the history, heritage, and ...

Pluto may not be a planet any more, but you still have a chance to see the distant dwarf planet at one of Michigan's ...

Pluto will mark a birthday of sorts on March 23, 2178. No one is likely to be there to celebrate it, of course. Even if ...

Clyde Tombaugh discovered Pluto in 1930 at Lowell Observatory in Flagstaff. Here's how Pluto won - and lost - its planetary status.

An amateur astronomer discovered Pluto 95 years ago today. The former planet will complete an orbit in another 153 years.

The "Star Trek" legend's only son will discuss his memoir at the annual space-themed event.

Impressed with his work, the Lowell Observatory hired Tombaugh to do manual ... suggested the name Pluto, the god of the underworld. Tombaugh’s newfound fame earned him a scholarship to the ...

Percival Lowell founded the Lowell Observatory in Flagstaff, Arizona, in 1894 because he was fascinated with Mars. However, nearly 100 years later, the facility is best known as the home of Pluto.

An annual event over recent years, the I Heart Pluto Festival in Flagstaff, Arizona, celebrates the history, heritage, and cutting-edge astronomy at Lowell Observatory. On Feb. 18, 1930 ...