Early Astronomers

5 cards·by Melisssa

Ptolemy

developed a model to support geocentric system and explain"wandering" planets.

Copernicus

First person to suggest sun-centererd (heliocentric) system

Galileo

Telescope observations supported Copernicus's Helopcentric sytem/moon's orbiting Juptier and phases of Venus

Kepler

used Brahe's observations to determine that planets' orbits were ellipses not circular.

Newton

explained elliptical path with intertia and gravity.