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Astronomers by Greg Snider and Ty Hawkins and Logan Elvington
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276
Eatstothes
He measured the circumfrence of the earth -
473
Copernicus
He introduced the idea that planets revolve around the sun -
546
Tycho Brahe 1546
He created the tychonic theory -
560
Pythagoras was born in Greece
Pythagoras was the eirliest known astronomer. He was born in B.C -
560
Pythagorus
he believed the planets revolved around a fire in the center of earth -
564
Galileo
Galileo proved heliocentric theory with a giant toy telescope. -
571
Kepler
He figured out how planets orbit the sun -
Sep 1, 643
Newton
He explained gravity and the laws of motion.He learned centrifiugal force -
Aristotle was born in Greece
Aristotle was born. He was born in 384 B.C. -
Hipparchus
He believed the earth was the cente3r of the universe -
Eudoxus
He created the theory of concentric