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Alissa's Astronomers

Published on Nov 20, 2015

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1.

ASTRONOMERS

By Alissa Hiltner
Photo by Jason A. Samfield
2.

ARISTOTLE

  • 384-322 BCE
  • The moon,sun,planets,and stars on a series of circles around the earth
Photo by Leo Reynolds
3.

ARISTARCHUS

  • 310-230 BCE
  • Measure the relative distances to the moon and sun
Photo by ouhos
4.

PTOLEMY

  • 100-170 CE
  • A celestial body traveled at a constant speen in a perfect circle
Photo by ouhos
5.

NICOLAUS COPERNICUS

  • 1473-1543
  • Planetary paths should be perfect circles
  • The sun is in the center of the solar system
Photo by Rhubarble
6.

JOHANENES KEPLER

  • 1571-1630
  • Planets don't move in a perfect circle
  • They move in a ellipses
Photo by Vanderelbe.de
7.

GALILEO GALILEI

  • 1564-1642
  • Invented the telescope
  • The earth was not the only object in orbit
Photo by brongaeh

Alissa H