Clyde Tombaugh (nonfiction)

The astronomer Clyde Tombaugh, discoverer of Pluto, here shown circa 1930 with his homemade 9-inch telescope.

Clyde William Tombaugh (/ˈtɒmbaʊ/; February 4, 1906 – January 17, 1997) was an American astronomer.

He discovered Pluto in 1930, the first object to be discovered in what would later be identified as the Kuiper belt. At the time of discovery, Pluto was considered a planet but was later reclassified as a dwarf planet.

Tombaugh also discovered many asteroids.

He called for the serious scientific research of unidentified flying objects, or UFOs.

Nonfiction cross-reference

External links:

• Clyde Tombaugh @ Wikipedia