He was one of the first astronomers to believe that the planets, sun, stars, and moon could be described by mathematical equations.
Approx. 400 BC
He believed that the universe was Geocentric and that the planets and stars were perfect spheres but the earth wasn't.
Approx. 1473 - Approx. 1543
he was one of the first astronomers to believe in the heliocentric theory placing the sun at the center of the universe.
Approx. 1546 - Approx. 1601
He supported the geocentric theory but he did discover a new star and he invented the Tyconian Quadrant
Approx. 1564 - Approx. 1642
He discovered 4 of the biggest moons hat surround Jupiter. He was also a supporter of the Heliocentric theory.
Approx. 1571 - Approx. 1630
He made 3 laws of planetary motion. one of which being that planets move in the shape of an ellipse. another one of the laws s that a line between a planet and the Sun covers equal areas in equal times.
Approx. 1642 - Approx. 1727
Made the three laws of motion which deal with gravity and inertia.
Approx. 1656 - Approx. 1742
He predicted the motion and orbit of Halley comet around earth.
1879 - 1955
He discovered E=mc2 which is how the maximum speed limit of light affects measurements of time and space which is special relativity.
Approx. 1889 - Approx. 1953
He helped prove that the universe is ever expanding because he had researched the Andromeda Nebula.