5.8 Timeline

  • 100 BCE

    Claudius Ptolemy

    Claudius Ptolemy
    1. Claudius Ptolemy discovered that the Moon, Mercury, Venus, and the Sun all revolved around Earth.
    2. He made his discovery around 141 B.C.
    3. This discovery is important because he synthesized Creek knowledge of the known Universe.
  • 276

    Eratosthenes

    Eratosthenes
    1. Eratosthenes discovered the tilt of the Earth's axis.
    2. He made this discovery in around 240 B.C.
    3. This discovery is important because his discover helped him make a map of the known world.
    4. He was born in 276 B.C.
  • Feb 19, 1473

    Nicolaus Copernicus

    Nicolaus Copernicus
    1. He discovered that the sun was stationary in the center of the universe.
    2. He discovered this in 1514
    3. This discovery is important because it established that the planets orbited the sun rather than the earth.
  • Dec 14, 1546

    Tycho Brahe

    Tycho Brahe
    1. He discovered the geo-helicocentric model.
    2. The geo-helicocentric model occured in the 16th Century.
    3. This is important because it led to the advancement in astronomical tools.
  • Sir Isaac Newton

    Sir Isaac Newton
    1. Sir Isaac Newton discovered that all objects in the Universe pulled on each other through gravity.
    2. He mad this discovery around 1665-1666.
    3. This is important because it led to more ways to solve mathamatic problems.
  • Albert Einstein

    Albert Einstein
    1. Albert Einstein discovered gravitational waves in space.
    2. He discovered this in 1916.
    3. This is important because it allows us to discover the universe in ways never thought possible.