ASTRONOMY

ASTRONOMERS

• Aristotle
• Aristarchus
• Ptolemy
• Nicolaus Copernicus

NEXT ASTRONOMRS

• Joshanenes Kepler
• Galileo Galilei
• Isaac Newton
• Edwin Hubble

ARISTOTLE

• A Greek philosopher
• Made the first model earth is in the center. Geocentric
• He lived for 64 years
• 384 BCE to 322 BCE
• Earth is round

ARISTARCHUS

• He lived for 80 years
• 310 BCE to 230 to BCE
• His model is how far the moon was form the sun
• He was an astronomer

PTOLEMY

• Lived for 70 years
• Form 100 CE to 170 CE
• An astronomer, geographer, mathematician
• He made the wheels on wheels system plaints move backwards

NICOLAUS COPERNICUS

• Lived for 70 years
• 1473-1543
• A polish astronomer
• Heliocentric model
• Made circles around the sun

JOHANENES KEPLER

• Lived for 59 years
• 1571-1630
• He thought that plaints traveled not in circles
• He was a mathematician

GALILEO GALILEI

• Lived for 78 years
• 1564-1642
• Planets orbit and go threw similar phases
• He was a scientist

ISAAC NEWTON

• 1643-1727
• Lived 84 years
• He made the physics of the solar system

EDWIN HUBBLE

• 1889-1953
• Lived for 60 years
• He found the constant relation ship between galaxy's

GEOCENTRIC MODLE

• Earth in the center
• The first model
• Planets Orbit around the earth
• Earlier people used this model

HELIOCENTRIC MODEL

• The sun is in the center
• The model proper to the one we use
• People use this model today