Ancient Astronomers

By hstone7260
  • 240 BCE

    Eratosthenes

    1. Calculated circumference of Earth
    2. 240 BC
    3. It gave an idea of how big the Earth actually was
  • 150

    Claudius Ptolemy

    1. Geocentric Theory
    2. 150
    3. He developed the first model of the solar system
  • 1504

    Nicolaus Copernicus

    1. Everything in the solar system revolved around the sun 2.1504
    2. It was important because it changed the way people though about the solar system
  • 1572

    Tycho Brahe

    1. Discovered a Supernova and proved it wasn't an atmospheric object
    2. 1572
    3. It proved the universe could change

  • Johannes Kepler

    1. Kepler's Laws of Planetary Motion
    2. 1605
    3. It fixed many problems with understanding of the solar system at the time

  • Isaac Newton

    1. Gravity
    2. 1666
    3. It helped prove all objects are subject to the force of gravity

  • Albert Einstein

    1. Theory of Relativity
    2. 1905
    3. It improved the study of particles and how they interacted along with bringing in the nuclear age