Ancient astronomers timeline

By Raeya
  • 380 BCE

    The geocentric theory discovered by Claudius Ptolemy

    This was discovered to show that the Earth is the center of the universe and other objects go around it
  • 300 BCE

    A system of latitude and longitude discovered by Eratosthenes

    This was discovered to to help identify geographic locations.
  • 1543

    Heliocentric Theory of the universe discovered by Nicolaus Copernicus

    This was discovered because Copernicus thought that Ptolemy's theory was not correct.

  • The Tychonic system created by Tycho Brahe

    This was created because Copernicus's heliocentric model was not entirely accurate.

  • Three major laws of planetary motion discovered by Johannes Kepler

    This was discovered because he used his mentor Tycho's data to discover that the orbit of Mars was an ellipse.

  • The reflecting telescope discovered by Sir Isaac Newton

    This was discovered because he wanted to closely examine the planets.

  • Theory of relativity discovered by Albert Einstein

    This was discovered as Einstein stated, because of "the preference of inertial motion within special relativity".