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The Most Significant Events In Astronomy

By AlexiaPG
  • 13,000 BCE

    Big Bang

    Big Bang
    It happened between 13 and 20 billion years ago at the center of the Universe
  • 3000 BCE

    Stonehenge

    Stonehenge
    The main stones of Stonehenge are put into place.
  • 280 BCE

    The Earth revolves around the Sun

    The Earth revolves around the Sun
    Samos (Alexandria) Aristarchus suggests the Earth revolves around the Sun. He provides first estimation of Earth-Sun distance.
  • 240 BCE

    Earth´s circumference

    Earth´s circumference
    Eratosthenes measures the circumference of the earth with surprising accuracy
  • 140 BCE

    Geocentric model

    Geocentric model
    Ptolemy suggests geocentric theory of the universe in famous work Mathematike Syntaxis.
  • 130 BCE

    Hipparchus

    Hipparchus
    Greece, Hipparchus develops the first acccurate star map and star catalogue with over 850 of the brightest stars.
  • Sep 13, 1543

    Heliocentric Model

    Heliocentric Model
    Copernicus publishes his heliocentric theory of the Universe.

  • Telescope

    Telescope
    Galileo uses telescope for astronomical purposes. He discovers 4 Jovian moons, the Moon's craters and the Milky Way galaxy

  • Newton

    Newton
    The first reflecting telescope was built by Newton.

  • Uranus

    Uranus
    The discovery of Uranus by Herschel

  • Apollo 11

    Apollo 11
    Armstrong and Aldrin walk on the Moon as part of Apollo 11 mission.

  • Mars

    Mars
    New evidence found for water on Mars