Scientific Timeline

  • Period: 100 to

    Scientific leders

  • Ptolemy
    127

    Ptolemy

    He made astronomical observations from Alexandria in Egypt during the years 127-141.
  • Copernicus
    Apr 24, 1543

    Copernicus

    Copernicus's work ‘On the Revolutions of Celestial Spheres’ was published shortly before he died in 1543.

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