Ancient Astronomers Timeline 5.8

  • 240 BCE

    Eratosthenes

    1.Measured the circumference of the Earth and was only off by about 1,000Km
    2.~240 B.C.E.
    3.This measurement helped pave the way for ancient trade routes and oceanic exploration.
  • 200

    Claudius Ptolemy

    1.Provided a world map, and was the first to use longitude and latitude
    2.~200
    3.The system of longitude and latitude helped map makers and governments to properly determine booundaries.
  • 1514

    Nicolaus Copernicus

    1.Was the first modern European scientist to propose the heliocentric theory
    2.Between 1508 and 1504
    3.This theory led the way for modern astronomy as it helped religion have less of a play in science
  • Tycho Brahe

    1.Invention of the Tychonian quadrant
    2.1583
    3.This invention allowed astronomers to measure the distance between stars and other celestial objects
  • Johannes Kepler

    1.Devised the laws of planetary motion
    2.1609
    3.Helped pave the way for heliocentrist theories and studies instead of geocentrist.
  • Sir Issac Newton

    1.Published/discovered the laws of gravity and motion
    2.1704
    3.Helped pave the way for modern physics theories and helped with the observations of optics and lights.
  • Albert Einstein

    1.The equivalence of mass and energy statement (E=mc^2)
    2.1905
    3.This simple physics statement is the explanation for one of the most basic natural processes in the universe.