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240 BCE
Eratosthenes
he was a greek mathematician, he invented the disciplen of geography still used today he was also the first person to calculate the circumference of the earth -
Period: 100 to 170
Claudius Ptolemy
he made the geocentric model, saying everything orbited earth -
1510
Nicolaus Copernicus
his thery was that the sun was at the center of the universe. he even published a book about it too -
Tycho Brahe
he helped flip the therory that the sun was in the center of the universe he overturned it -
Johannes Kepler
best known for his laws of planetary motion he also In 1609 he published Astronomia Nova, delineating his discoveries, which are now called Kepler's first two laws of planetary motion. -
isac newton
constructed the first reflective teloscope in 1668 -
Albert Einstein
he developed the therory of realitvity one of the two pillars of modern physics, he also created mass-energy equivlence, e=mcsquared