Famous Astronomers

By Selena02
  • 205 BCE

    Eratosthenes

    1. Calculated the earths circumference
    2. This showed the earth was curved and not flat
  • Period: 41 to 127

    Claudius Ptolemy

    1. Made a catalog of stars
    2. helped name stars and placed them
  • 1543

    Nicolaus Copernicus

    1. Theory of Heliocentric system
    2. gave rise to the idea today that the planets orbit around the sun
  • 1572

    Tycho Brahe

    1. Found the 'new star'
    2. Found that there were objects passed the moon and that they did not move.

  • Johannes Kepler

    1. Discovered the three laws of planetary motion
    2. This is how we still look at how planets move around the sun, in an eclipse

  • Sir Isaac Newton

    1. Created the first reflecting telescope
    2. made it a lot easier and more detailed studying of space

  • Albert Einstein

    1. Came up with the theory of relativity
    2. 1905-1915
    3. this leads to the explanation of our universe and how it came to be