Oip

Ancient Astronomers

  • 220 BCE

    Eratosthenes

    He started geography essentially
  • 145

    Claudius Ptolemy

    It took him 18 years to develop the Ptolemic system which was earthcentric.
  • 1543

    Nicolaus Copernicus

    copernican heliocentrism. It was the first time anyone said that the sun was the center.
  • Johannes Kepler

    Created Keplers 3 laws. They brought a better understanding of planetary motion.
  • Tycho Brahe

    He is known for the Tychonic system. it combined the copernican and the ptolemaic systems.
  • Sir Isaac Newton

    He was the first at Cambridge to not be a priest. He also invented calculus to help explain physic.
  • Albert Einstein

    Special relatively. Without this there would be no gps.