Astronomers Foldable review .

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Lesson 1: Models of the Solar System
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Presentation transcript:

Astronomers Foldable review 

Ptolemy 90AD to 168 AD Thought like ancient Greeks that Earth was the center of the Universe- geocentric model 

Copernicus     1473-1543 Further developed Aristarchus heliocentric model (sun centered) by making a model of how the planets move around the sun 

Said planets move in perfect circles Brahe                         1546-1601 Said planets move in perfect circles

Used Brahe's observations to find planets orbit in ellipses Kepler      1571-1630 Used Brahe's observations to find planets orbit in ellipses

Galilleo                1564 to 1642 Used observations (found four moons orbit Jupiter and Venus has similar phases to the moon) to prove heliocentric model 

Newton         1642 to 1727 Confirmed the heliocentric model, proved gravity and inertia work together to keep planets and their moons in motion 

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