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323 BCE
Claudius Ptolemy
Ptolemy wrote "The Almagest." He created a math and science to astronomy that people didn't see or care about before. He calculated the past, present, and future position of the planets. -
276 BCE
Eratosthenes
Sieve of Eratosthenes In mathematics, the sieve of Eratosthenes is a simple, ancient algorithm for finding all prime numbers up to any given limit. -
Feb 9, 1473
Nicolaus Copernicus
Proposed Earth orbited the Sun via De Revolutionibus Orbium Coelestium contradicting the long held Ptolomic belief that the Sun orbited the Earth thereby laying the groundwork for Galileo and Kepler. -
Dec 14, 1546
Tycho Brahe
Chronicled supernova of 1572 and discovered it had no diurnal parallax proving it lay beyond the Moon, plotted the motion of the comet of 1577, accurately plotted motions of planets used by Kepler after his death. -
Johannes Kepler
Johannes Kepler is known for his laws of planetary motion. He studied under Tychoe Brahe, who was another famous astronomer, and kept very close records of Mars. -
Isaac Newton
Isaac Newton is best known for his contribution to the world of physics. In astronomy, he made the newtonian telescope and wrote Philosophiae Naturalis Principa Mathematica which laid down the foundation of classic mechanics. He studied the lwas of motion and the universal motion and planetary gravitation. He removed all remaining doubts of the heliocentric model. -
Albert Einstein
Mass–energy equivalence mass–energy equivalence states that anything having mass has an equivalent amount of energy and vice versa, with these fundamental quantities directly relating to one another by Albert Einstein's famous formula