PtolemyHe thought Goecentric. This means that he thought the Earth was in the canter of our solarsystem. He thought the closest planet to the Earth was the moon. Then Mercury, Venus, Sun, Mars, Jupiter, and Satern. His theory was called the Ptolemty System.
Feb 19, 1473
Nicholas CopernicusHe thought heliocenteric. The same as Galileo Galilei. Heliocenteric means that the center of the solar system was the Sun not Earth. Nicholas thought that the moon was in orbit around the Earth not the Sun. The Helio centric universe was proposed as early as 200 B.C.
Jan 1, 1564
Galileo GalileiGalileo thought hilocentric. This means that he thought the sun was the center of the solar system. Before Galileo everyone thought geocenteric ( thought that the Earth was the center of the solar system.).
Dec 27, 1571
Johannes KeplerJohannes Kepler thought Heliocentric. This means that he thought the sun was the center of the solar system. he worked for Tycho Brahe and when Tycho past then kepler used his info to create the three laws of Planetary Motion. He is now known for those three laws.
Sir Isaac NewtonIsaac was a scientist from Britan. He was also a mathamatition, a physcist, a theologian, an astronamer, and a alchemist and natral philosopler. He invented a reflective telscope and many small children's toys allong 1668.