Astronomers Time Line
Published on Nov 28, 2015
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PRESENTATION OUTLINE
ARISTOTLE
- He thought the earth was the center of all things
- He thought the sun, moon, and stars went in circles around the earth
- (384-322 BCE)
ARISTARCHUS
- Aristarchus tried to measure the distance between the moon and the sun
- (384-322 BCE)
Photo by Kaensu
PTOLEMY
- He believed the planets moved in circle around earth while spinning in smaller circles
- (100-170 CE)
Photo by williamcromar
NICOLAUS COPERNICUS
- He developed the first detailed heliocentric model of the solar system
- (1473-1543)
Photo by Rhubarble
KEPLER
- Made the Kepler laws
- Plantery orbits are ellipses with the sun as the center
- Plants move faster with orbits closer to the sun
- The distance the planet is to the sun takes it longer to orbit
- (1571-1630)
GALILEO
- Made big improvements to the telescope
- Showed that earth was no the only planet that could be orbited
Photo by salendron
ISAAC NEWTON
- He discovered gravitational force
- He discovered the three laws of motion
Photo by Betsie Nel
EDWARD HUBBLE
- He discovered other galaxy's
- He also discovers that the universe is expanding
Photo by NASA's Marshall Space Flight Center
