Tombaugh

Clyde Tombaugh was only twenty-four years old when he discovered Pluto.

Clyde Tombaugh was born on a farm in Illinois. His father was a farmer.

Clyde Tombaugh photographed 65% of the sky and spent thousands of hours examining photographs of the night sky.

After ten months of very hard work, sometimes working through the night in an unheated dome, Clyde Tombaugh discovered an object he named Pluto.

Clyde Tombaugh died at the age of ninety on January 17, 1997.

Clyde Tombaugh also discovered several star clusters, a comet and more than a hundred asteroids.

Pluto was discovered by Clyde Tombaugh in 1930.

Pluto was found by Clyde Tombaugh in 1930.