Ancient Astronomers Timetoast

By AGaynor1
  • 194 BCE

    Eratosthenes (276 B.C. - 194 B.C.)

    He was the first to discover the Earth's tilt and how far away things like the moon and sun were away from Earth. He invented the longitude and latitude system.
    Year - 194 B.C.
    His discoveries are important because they help with knowing where you're at on the earth.
  • 90

    Claudius Ptolemy (100 A.D. - 170 A.D.)

    He created the Ptolemic system, also known as the geocentric system.
    Year - A.D. 90 - 168
    This system put the Earth at the center of the universe, which actually turned out to be false.
  • 1543

    Nicolaus Copernicus (1473 - 1543)

    He created the heliocentric system, which put the sun at the center of the universe.
    Year - 1543
    It's important because it helped lead to the accuracy of our solar system.
  • 1572

    Tycho Brahe (1546 - 1601)

    He was able to build instruments and discover stars beyond the moon. This was before the invention of the telescope.
    Year - 1572
    This is important because it shows the universe is unchanging.

  • Johannes Kepler (1571 - 1630)

    Is responsible for discovering that the planets traveled in ellipses, not circles. He created the three laws based on his discoveries.
    Year - 1609
    HIs laws are important because it shows how the planets orbit the sun.

  • Sir Isaac Newton (1643 - 1727)

    He discovered the laws of motion and created the three laws.
    Year - 1666
    This is important because it defines the motion of the planets and how we study them.

  • Albert Einstein (1879 - 1955)

    He discovered the laws of physics are the same throughout the universe.
    Year - 1915
    His discovery can help predict things like black holes in sapce.