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Famous Astronomers

Published on Dec 06, 2015

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PRESENTATION OUTLINE

1.

ARISTOTLE

  • Lived 384-322 BCE
  • Thought earth was the center of all things
  • Created the geocentric model
Photo by DonkeyHotey
2.

ARISTARCHUS

  • Lived 310-230 BCE
  • Propoesed a heliocentric model of the solar system
  • Tried to measure the distance to the moon and sun
  • Proposed the sun was in the middle of the solar system
Photo by tudedude
3.

PTOLEMY

  • Lived 100-170 CE
  • Believed a celestial body travled at a constant speed and in a perfect cricle
  • Wheels-on-wheels
4.

COPERNICUS

  • Lived 1473-1543
  • Used wheels-on-wheels system
  • Believed the sun was in the center
Photo by Franco Folini
5.

KEPLER

  • Lived 1571-1630
  • Formated three principles
  • The second law states that planets move faster in their orbits when closer the the sun
Photo by European Southern Observatory
6.

GALILEO

  • Lived 1564-1642
  • Made improvements the the telescope
Photo by Biscuit in Pursuit
7.

HUBBEL

  • Lived 1889-1953
  • Proposed that there was more than one galaxy
Photo by zAmb0ni
8.

NEWTON

  • Lived 1643-1727
  • Created the theroy of universal gravitation
Photo by Esthr
9.

HELIOCENTRIC MODEL

  • a theory that places the Sun as the center of the universe, and the planets orbiting around it
Photo by nojhan
10.

GEOCENTRIC MODEL

  • It was developed to explain how the planets, the Sun, and even the stars orbit around the Earth.
Photo by Cameron Maddux

Matthew Mortensen