Ptolemy

The Astronomers

By scienceteacher
  • 100-170AD
    170

    100-170AD

    Ptolemy came up with the Geocentric Theory.
    All the Solar System circles the Earth.
  • Copernicus
    Feb 19, 1473

    Copernicus

    Heliocentric Theory Sun is center of Solar System and planets
    orbit around it.
  • GALILEO

    GALILEO