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 ...

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

When was Pluto discovered? Pluto was discovered in 1930 by Clyde Tombaugh, an American astronomer at the Lowell Observatory in Flagstaff, Arizona. Cold, dark and distant, it was n ...

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

“New Horizons shattered a major paradigm of planetary science,” says Alan Stern, the mission’s principal investigator. “Pluto ...

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

According to a recent YouGov poll, 35% of Americans think Pluto is not a planet. But they are all wrong—kind of. To get to ...

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

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

Few cities have as strong a space legacy as Flagstaff, Arizona. This high-elevation mountain town — no, Arizona isn’t all desert — is where Pluto was discovered, where astronauts trained to ...

The school unveiled the "alternate identity" over the summer, paying homage to the northern Arizona area's rich astronomical ...

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 ...