Galileo (feb 15, 1564 – jan 8, 1642)
Description:
Galileo was an astronomer who observed the heavens through a telescope. He said that celestial bodies were made out of matter, and not ether. He discovered the principle of inertia and developed a heliocentric theory of the universe.Added to timeline:
Date:
feb 15, 1564
jan 8, 1642
~ 77 years