Astronomers

Greek astronomer who thought the Earth was at the center of the universe

• Kepler
• Brahe
• Ptomely
• Hawking

This astronomer proved other galaxies existed beyond the Milky Way

• Kepler
• Hubble
• Sagan
• Brahe

Danish astronomer whose precise measurements of the planets and stars helped future astronomers

• Brahe
• Copernicus
• Galileo
• Newton

He was Brahe's assistant and he announced all planets revolve around the sun in elliptical orbits

• Einstein
• Hubble
• Ptomely
• Kepler

One of the first astronomers to use a telescope to view space. He saw mountains on the moon, sunspots on the sun and phases of Venus

• Galileo
• Divinci
• DeGrasse Tyson
• Newton

His laws of gravity explained why planets rotated around the object with the most mass in the solar system. 

• Capernicus
• Kepler
• Newton
• Einstein

Polish astronomer who theorized the sun is at the center of the universe and all planets orbit the sun.

• Newton
• Kepler
• Capernicus
• Galileo

He invented calculus

• Einstein
• Oppenheimer
• Newton
• Hubble