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Astronomy

Published on Nov 20, 2015

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1.

ARISTOTLE

  • Believed Geocentric model
  • Lived 384-322 BCE
  • Greek Astronomer
  • Observed changing positions of stars
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2.

ARISTARCHUS (310-230 BCE)

  • Proposed the Heliocentric Model
  • Tried to measure the distance to the moon and sun
  • Observation + Geometry
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3.

PTOLEMY (100-170 CE)

  • Developed detailed Geocentric Model
  • Space bodies traveled in perfect circles
  • Wheel-on-wheels system
  • Predicts where planets would be in the future
Photo by archer10 (Dennis)

Ann H