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240 BCE
Eratosthenes
Accurately measured the circumference of the Earth. It is important for navigation. -
143
Claudius Ptolemy
He was a believe that the Earth was the center of the Universe. Although this theory was completely incorrect he was the father of astronomy and paved the way for others to discover. -
1508
Nicolaus Copernicus
Inventor of the theory that the Sun was the center of the Universe. Before this, people believed that the Earth was the center. This discover made astronomical discoveries for future astronomers easier and it gave us a better understanding of the way palettes orbit. -
1572
Tycho Brache
Discovered a new star in the constellation Cassiopeia. Ended up being a supernova. This was an important discovery because it turned Brache towards science leading to more astronomical discoveries. -
Johannes Kepler
Defined the laws for planetary motion. He defended the theory that planets did orbit in a circular motion. His only extra idea was that they may not spin in a perfect circle. -
Sir Isaac Newton
Newton discovered the theory of gravitation which led to the three laws of motion. These ideas are what created modern physics and what it is based on. -
Albert Einstein
Developed the Theory of Relativity. This theory lead physics in a brand new direction.