One Pluto year equals 248 Earth years. At 1473 miles in diameter—about half the width of the United States—Pluto is the ...

Kirk to bend Trump’s ear toward Pluto. Getty Images The now-dwarf planet was first discovered in 1930 by Clyde W. Tombaugh, an Illinois native, at Lowell Observatory in Flagstaff, Arizona.

Sedona-based author Diane Phelps Budden speaks about her book “Needle in a Haystack: How Clyde W. Tombaugh Found an Awesome New World” and how the Pluto discoverer developed a passion for astronomy ...

The exo planet was first spotted in the night sky by astronomer Clyde W. Tombaugh at the Lowell Observatory in Flagstaff, Arizona, way back in 1930, reports History.com. It's gone through a ...

To this day, Lowell Observatory holds considerable pride for its place in astronomy history; visitors can look through the same telescope that assistant Clyde W. Tombaugh used to make the discovery.

Pluto was first discovered in 1930 by the American astronomer Clyde W. Tombaugh. Named after the Roman god of the underworld, Pluto has always been a bit of an outlier in the list of the planets.

While not a native of the Sunflower State, Clyde W. Tombaugh is remembered fondly for his work in the exploration of our solar system and his connections to Kansas. Tombaugh was born in Streator ...

On February 18, 1930, astronomers first discovered the planet, Pluto. Clyde W. Tombaugh discovered it at the Lowell Observatory in Flagstaff, Arizona. Astronomers had long thought that a ninth planet ...

When the late American astronomer Clyde W. Tombaugh discovered planet Pluto 76 years ago this month, he opened the gateway to an unknown region of ancient, icy objects unlike any worlds in our solar ...