FAMOUS ASTRONOMERS

Aristotle

• 384BC - 322BC
• His writings helped create a broad system of philosophy
• He was a greek pholisifer born in Stagirus

ARISTARCHUS

• 310BC - 230BC
• Aristarchus of Samos was an ancient Greek astronomer and mathematician
• who presented the first known model that placed the Sun at the center of the known universe with the Earth revolving around it.

PTOLEMY

• 367BC - 283BC
• Earth was the center of the universe and everything revolved around it.

NICOLAUS COPERNICUS

• 1473 - 1543
• A mathmatitionn and atronomer who placed the sun in the center insted of earth

JOHANENES KEPLER

• 1571 - 1630
• He discovered the law of planetary motion

GALILEO GALILEI

• 1564 - 1642
• Teloscopic information of the fazes of venus

ISAAC NEWTON

• 1643 - 1727
• Newton formulated the law of motion and universal gravitation

EDWIN HUBBLE

• 1889 - 1953
• Formulated the Hubbble law
• Provided substantial evidence about galaxies

GEOCENTRIC MODEL

• a description of the cosmos where Earth is at the orbital center of all celestial bodies.
• Aristotle and Ptolme thought this theory

HELIOCENTRIC MODEL

• It is a model in which the earth and the planets revolve around the sun
• Aristarchus and nicolous Copernicus