Timeline of knowledge and understanding of Solar System

By kikiliki
  • 140 BCE

    Claudius Ptolemy

    Claudius Ptolemy
    He discovered geocentric that Earth is the center of the universe.
  • 1531

    Edmond Halley

    Edmond Halley
    Having computed the orbit of the famousq Halley's Comet (named after him).
  • 1543

    Nicolaus Copernicus

    Nicolaus Copernicus
    The geocentric theory was first proposed by Copernicus.

  • Johannes Kepler

    Johannes Kepler
    Johannes Kepler improved the heliocentric theory of Nicolaus Copernicus

  • Galileo Galilei

    Galileo Galilei
    Galileo Galilei published a book that stated, among other things, that the heliocentric theory of Copernicus was correct.

  • William Herschel

    William Herschel
    William Herschel discovered the planet Uranus and several moons around other gas giants.

  • the first asteroid

    the first asteroid
    Giuseppe Piazzi accidentally discovered the first and largest asteroid, Ceres.

  • the second asteroid

    the second asteroid
    Pallas, minor-planet designation 2 Pallas, is the second asteroid to have been discovered (after Ceres),

  • the third asteroid

    the third asteroid
    It was discovered by Karl Ludwig Harding.

  • the fourth asteroid

    the fourth asteroid
    it was by Heinrich Wilhelm Matthias Olbers

  • Urbain Le Verrier

    Urbain Le Verrier
    Urbain Le Verrier discovered the planet, Neptune.

  • Clyde Tombaugh

    Clyde Tombaugh
    He discovered Pluto.

  • Voyagers 2

    Voyagers 2
    Voyager 2 is a space probe launched by NASA.

  • Voyagers 1

    Voyagers 1
    Voyager 1 is a space probe launched by NASA