Ancient Astronomers

  • 1200 BCE

    Almagesti

    A book created by Claudius Ptolemy which was a basic guide for Islamic and European astronomers
  • 240 BCE

    "Geography"

    Eratosthenes was one of the earliest astonomers in history. He invented the longitude and latitude system and, with that, discovered the circumference of the Earth
  • 1543

    Heliocentric Theory

    A theory created by Nicolaus Copernicus. This theory proposed that the planets revovle around the sun
  • 1572

    Elliptical orbits

    Tycho Brahe proposed that our planets orbit the sun in an elliptical orbit. He used the newly invented telescope to solidify his discoveries
  • Kepler's Law

    Johannes Kepler discovered the laws of planetary motion. He was also the first person to determine that using two eyes enables depth perception
  • Newton's Law

    Isaac Newton proposed the thoery of gravity. Newton's law of gravity is still being used to this day
  • E=mc^2

    This equation was made by Albert Einstein a journal titled, “Does the Inertia of a Body Depend Upon Its Energy Content?”, which proves that energy and matter were the same thing in different forms