Ancient Astronomers

  • 255 BCE

    Eratosthenes

    Eratosthenes figured out the circumference of the earth this is important because Nasa uses this info everyday.
  • Period: 150 BCE to 151 BCE

    Claudius Ptolemy

    He made a set of geographical coordinates, the coordinates are used on a map digitally in modern technology
  • 1508

    Nicolaus Copernicus

    Nicolaus discovered the Heliocentric System in the early 15 hundreds, this is important because the Heliocentric system is still used today.
  • Tycho Brache

    Tycho discovered the phases of Venus. The phases of Venus is still studied today
  • Johannes Kepler

    He helped Tycho with his discoveries which is important because we still study his discoveries everyday.
  • Sir Isaac Newton

    He Invented the reflecting telescope which is still used today as modern technology
  • Albert Einstien

    Albert discovered the photoelectric effect, the photoelectric effect is used everyday.