Hudson’s Ancient Astronomers Timeline - Ms. Reysz

  • Eratosthenes
    85

    Eratosthenes

    He discovered “Earth’s axis” in 85 CE.
    It was important due to the use of measurements. He also discovered “Earth’s circumference”.
  • Claudius Ptolemy
    150

    Claudius Ptolemy

    He discovered longitudes and latitudes in 150 CE.
    This was important due to maps being used and kept for directions. He also discovered planets that revolve around our Earth.
  • Nicolaus Copernicus
    1508

    Nicolaus Copernicus

    He discovered “heliocentric system” in 1508.
    It was important due to the motions of its system. He also discovered “Sun center theory”.
  • Tycho Brahe

    Tycho Brahe

    Invention 1: He discovered “C/1590 El” in 1590.
    It was important due to the invention of steel quadrant. Invention 2: He also discovered “new star Cassiopeia”.
  • Johannes Kepler

    Johannes Kepler

    He discovered Mars was the ellipse in 1601.
    This was important due to “Kepler’s Laws of Planetary Motion”. He also discovered all other planets can travel as an ellipse around our Sun.
  • Isaac Newton

    Isaac Newton

    He discovered ‘calculus’ in 1665.
    This was important due to the mathematical theorm people would have to learn and study. He also discovered “theory of universal gravity”.
  • Albert Einstein

    Albert Einstein

    He discovered the equation “E = mc^2” in 1905.
    This was important due to the understanding the similarity of energy and mass. He also discovered “theory of relativity”.