Galaxy

the most significant events in the astronomy

  • First solar-lunar calendars
    2000 BCE

    First solar-lunar calendars

    It was create on Egypt and Mesopotamia, was create a long of 2,000 years B.C.
  • Third Law
    1619 BCE

    Third Law

    The Third Law of Planetary Motion is announced by Kepler in his work Harmonice Mundi on Germany about 1619 A.D.
  • Milky Way Galaxy
    1609 BCE

    Milky Way Galaxy

    Galileo uses telescope for astronomical purposes. He discovers 4 Jovian moons, the Moon's craters and the Milky Way galaxy on Italy about 1609 A.D.
  • Discovers of Galileo
    1609 BCE

    Discovers of Galileo

    Galileo uses telescope for astronomical purposes. He discovers 4 Jovian moons, the Moon's craters and the Milky Way galaxy on 1609 at Italy
  • telescope
    1608 BCE

    telescope

    Hans Lippershey, a Dutch spectacles maker invents the telescope.
    on 1608 A.D.
  • Cassiopeia.
    1572 BCE

    Cassiopeia.

    Tycho Brahe discovers a supernova in constellation of Cassiopeia on Denmark about 1572 A.D.
  • Big Bang Theory
    13 BCE

    Big Bang Theory

    It was a explosion of many atoms between 13 and 20 billion years ago that create the universe.
  • heliocentric theory
    Sep 10, 1543

    heliocentric theory

    Copernicus publishes his heliocentric theory of the Universe on Poland on 1543 A.D.
  • Reflecting telescope

    Reflecting telescope

    The first reflecting telescope was built by Newton on 1699 at England
  • discovered of Uranus

    discovered of Uranus

    it was discovered on 1781 A.D on England by Herschel
  • mooons of mars

    mooons of mars

    Asaph Hall discovers Phobos and Deimos, the moons of Mars on 1877 at U.S.A
  • giant and dwarf stars

    giant and dwarf stars

    Hertzsprung describes giant and dwarf stars on 1908 A.D at Denmark
  • galaxies

    galaxies

    Hubble shows that galaxies exist outside the Milky Way galaxy on 1923 A.D. U.S.A
  • Pluto

    Pluto

    Clyde Tombaugh discovers Pluto on 1930 A.D at U.S.A
  • sputnik

    sputnik

    Sputnik, first object to orbit the Earth, launched by the Russians on 1957 A.D. at Russia
  • uranus rings

    uranus rings

    Discovery of Uranus' ring on 1977 A.D. at U.S.A.