HISTORY OF ASTRONOM

Aristotle

• He was a Greek philosopher.
• He thought the earth was the center of all thing.
• He drew a picture of what he thought it looked like.
• In his drawing he put earth in the center.
• Then he put all of the other planets, sun, and stars around it.

Aristarchus

• He was a Greek astronomer and mathematician.
• He proposed a heliocentric model of our solar system.
• It consisted of many measurements
• Earth to star, sun to star, earth to sun.
• His idea was a main contribution to science but solved mathmaticly.

Ptolemy

• He was an astronomer and he was a geographer.
• His model showed earth in the center.
• It also consisted of the moon next to earth.
• And other planets surrounding us.
• He thought that all the planets moving in smaller circles.

COPERNICUS

• He was a polish astronomer lived 80 years
• Most scientists thought his model was way to complicated
• He based his decision on just the naked eye and a telescope, and also books
• His model was a heliocentric model and was very detailed. Using a compass and other tools
• Sun was in the center an other planets surrounded and moon circled the earth

THE END