Lowell Observatory is best known for the discovery of Pluto. Astronomers there have also studied Halley's Comet and discovered an exoplanet in 2007.

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, the young ...

Following a multimillion-dollar expansion program in recent times, sudden harsh science cuts are challenging America’s ...

Clyde Tombaugh didn't set out to discover Pluto when he sent his sketches of the night sky to Lowell Observatory in Flagstaff ...

Great talking with you. Dean Regas: All right. One more note about Pluto's discovery, Clyde Tombaugh and the Lowell Observatory. So when I got to stay there in Clyde Tombaugh's apartment ...

February 18 marks the 93rd anniversary of Pluto’s discovery in northern Arizona. To celebrate, Lowell Observatory is partnering with other Flagstaff organizations for the Fourth Annual I Heart ...

Lowell Observatory Director Jeffrey Hall was amazed by the images of Pluto released Wednesday — and bowled over by the announcement that the planet’s largest heart-shaped region would be named ...

Pluto was the little planet that could — until it couldn’t. Discovered in 1930 at Lowell Observatory in Flagstaff, Arizona, Pluto was hailed as the ninth planet in our solar system.

Pluto was discovered in 1930 by Clyde Tombaugh, an American astronomer at the Lowell Observatory in Flagstaff. Cold, dark and distant, it was named after the Roman god of the underworld.

Pluto was discovered in 1930 by American astronomer, Clyde Tombaugh, the Lowell Observatory said. Here's a look at Pluto's history. Pluto was discovered in 1930 by Clyde Tombaugh, an American ...

The observatory in Flagstaff, AZ where Pluto was discovered in 1930. (Image credit: Lowell Observatory) "Lowell wanted to learn more about the planets and started coming under the belief that ...