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240 BCE
Eratosthenes
- making the first accurate measurement of the circumference of the Earth
- 240 BC
- importsnt because it helped us with figuring out the earth
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127
Claudius Ptolemy
- Earth the center of the universe
- AD 127
- knowing what planet was in the middle has helped us with finding out what is around us
-
1514
NIcolaus Copernicus
-He is best known as the first astronomer to posit the idea of a heliocentric solar system
-1514
this helped Brache with his discovery -
Tycho Brache
-theory of the Solar System
- in 1599
- important because it helped figure out the solar system -
Johannes Kepler
-Kepler's laws of planetary motion
-1609
- important because it helped figure out the motion in the world -
Sir Isaac Newton
- most famous for his law of gravitation,
- somewhere in 17 century
- helped with figuring out gravity
-
Albert Einstein
- Einstein is most famous for his theory of Relativity. -1921
- important because it determined that the laws of physics are the same for all non-accelerating observers, and that the speed of light in a vacuum was independent of the motion of all observers.