Astronomers by Greg Snider and Ty Hawkins and Logan Elvington
-
He measured the circumfrence of the earth
-
He introduced the idea that planets revolve around the sun
-
He created the tychonic theory
-
Pythagoras was the eirliest known astronomer. He was born in B.C
-
he believed the planets revolved around a fire in the center of earth
-
Galileo proved heliocentric theory with a giant toy telescope.
-
He figured out how planets orbit the sun
-
He explained gravity and the laws of motion.He learned centrifiugal force
-
Aristotle was born. He was born in 384 B.C.
-
He believed the earth was the cente3r of the universe
-
He created the theory of concentric