Clyde Tombaugh

Clyde Tombaugh was an American astronomer best known for discovering Pluto in 1930. Working at the Lowell Observatory in Arizona, he used a technique called "comparative astrophotography," comparing photographs of the night sky to identify moving objects. His work expanded our understanding of the solar system and the classification of celestial bodies. Tombaugh's discovery of Pluto sparked decades of debate regarding its status as a planet, which eventually led to its reclassification as a "dwarf planet" in 2006. His contributions remain significant in the field of astronomy and our understanding of planetary science.