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195 BCE
Eratosthenes
Eratosthenes used the sun to measure the roundness of the earth, because people then still believed the earth was flat. -
1543
Nicolaus Copernicus
He proposed that the planets revolved around the sun, although his complete theory wasn't 100% correct this was and started a revolution for scientists to discover more. -
Tycho Brahe
He made important contributions that were the best they could have before the telescope was invented.He used detailed measurements of the path of planets. -
Claudius Ptolemy
He came up with the geocentric theory, which was the theory that earth was the center of the universe -
Johannes Kepler
He found his three laws of planetary motion 1.The planets move in elliptical orbits with the sun at a focus. 2. In their orbits around the sun, the planets sweep out equal areas in equal times. 3.The squares of the times to complete one orbit are proportional to the cubes of the average distances from the sun. -
Sir Isaac Newton
Sir Isaac Newton discovered Newtons laws of motion, the three physical laws that together laid the foundation for classical mechanics.they describe a relationship between a body and the forces acting upon it -
Albert Einstein
Albert Einstein was best known for the general theory of relativity and the concept of mass energy equivalence expressed by the very known equation E=mc^2