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9999 BCE
Early Hominids Appear
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194 BCE
Eratosthenes
Created the first measurement of the size of Earth -
165
Ptolemy
Created the Heliocentric theory
Most influential Greek astronomers. -
May 24, 1543
Copernicus
Created the Heliocentric Theory. -
Brahe
Brahe helped prove the Heliocentric Theory to be true.
Created many instruments as well -
Bacon
Created the Scientific Method -
Kepler
Best known for creating the 3 laws of planetary motion. -
Galileo
Disproved the Geocentric theory using his telescope.
Discovered the moons of different planets. -
Descartes
Believed in Dualism, was a rationalist, father of modern philosophy -
Locke
Stated that everyone is born equal, blind, and without knowledge. -
Newton
Created the universal laws of gravity. Developed 3 laws of motion that form basic principals of physics. -
Mendeleev
Created the periodic table.
Left spots in the table for other scientists to discover. -
Leavitt
Inspired the enlargement in size of the Universe. Used brightness in stars to calculate the distance between us and the stars. -
Wegener
Created the Pangea theory -
Curie
Discovered Radium and Polonium, very important elements. -
Hubble
Proved the existence of other galaxies.
Proved that the universe is always expanding. -
Hess
Proved Wegener's theory through the use of sonar and observing the ocean floor.