Ptolemy made his most original contribution by presenting details for the motions of each of the planets
100 BCE
Ptolemy died
Feb 19, 1473
Copernicus was born
1532
Copernicus established that the planets orbited the sun rather than the Earth. He laid out his model of the solar system and the path of the planets.
May 24, 1543
Copernicus died
Dec 14, 1546
Brahe was born
Jan 22, 1561
Bacon was born
Feb 15, 1564
Galileo was born
Dec 27, 1571
Kepler was born
Descartes was born
Galileo built his first telescope, improving upon a Dutch design
Locke was Born
Galileo died
Newton was born
Newton made many advancements in the field of science and mathematics, he discovered Gravity, developed the three basic laws of motion, and co-development of Calculus
Newton died
Mendeleev was born
Curie was born
Leavitt was born
Mendeleev discovered the periodic law
Wegener was born
Hubble was born
Curie successfully isolated radioactive radium salts from the mineral pitchblende in their laboratory in Paris
Hess was born
Mendeleev died
Hubble discovered that countless galaxies exist beyond our own Milky Way galaxy
Leavitt discovered that some of these stars have a consistent brightness no matter where they are located, making these so-called Cepheid variables a good measuring stick for astronomical distances.
