HISTORY OF ASTRONOMY

ARISTOTLE

• HE WAS A GREEK PLIPOSOPHER
• HE THOUGHT THAT THE EARTH WAS IN THE CENTER OF ALL THINGS
• He thought that if the earth when around the sun the stars would shift as the earth moves

ARISTARCHUS

• He was a Greek astronomer and mathematician
• Aristarchus attempted to measure the relative distance to the moon and sun
• Aristarchus ratio was too small but was an important observation and geometry to solve

PTOLEMY

• He was a astronomer, geographer and mathematician
• He wrote a book about the planets
• He thought that the planets went in smaller circles while being turn in big circles

COPERNICUS

• He was an astronomer
• He felt the system was too complicated
• He thought that all the planets went in a perfect circles
• And the moon went around the earth

KEPLER

• He was an mathematician and astronomer
• He noticed that the planets can't fit perfectly
• He tried other paths and found the best fit was ellipse
• They call this the Kepler law

GALILEO

• He was a scientist who approached question know as today as scentific method
• Could see the planets though telescope
• He proved that the earth is not in the center