Question

1. who discovered pluto? isaac newton clyde tombaugh galileo galilei mike brown

Explanation:

Clyde Tombaugh discovered Pluto in 1930. Isaac Newton made contributions to physics and mathematics. Galileo Galilei was an astronomer known for his work with telescopes. Mike Brown was involved in the re - classification of Pluto as a dwarf planet.

Answer:

Clyde Tombaugh