key events in astronomy

By jorge angel lara trejo
  • 30,000 BCE

    the firs humans in north america

    ~30,000 B.C. North America Asian hunter-gatherers had crossed over the frozen Bering Strait to become first humans in North America.
  • Period: 10,000 BCE to

    those who crossed over on bering

    10,000 B.C. South America Those who crossed over on Bering Strait into North America had traveled as far south as Argentina by this point.
  • Period: 6000 BCE to

    britan becomes an island

    ~6,000 B.C. Europe End of land bridge between Britain and continental Europe. Britain becomes an island.
  • Period: 4500 BCE to

    the megalithic structure of carnac

    ~4,500 B.C. Brittany (France) The megalithic structures of Carnac were built.
  • Period: 3500 BCE to

    wales prente ifan

    3,500 B.C. Wales Pentre Ifan is built.
  • Period: 3200 BCE to

    the newgrange tomb

    ~3,200 B.C. Ireland The Newgrange tomb is built.
  • Period: 3000 BCE to

    the main stones stonehenge

    ~3,000 B.C. England The main stones of Stonehenge are put into place.
  • Period: 2000 BCE to

    first solar lunar calendars

    ~2,000 B.C. Egypt and Mesopotamia First solar-lunar calendars
  • Period: 2000 BCE to

    scotland the cairns balnuaran

    2,000-1,500 B.C. Scotland The cairns, Balnuaran of Clava, were built.
  • the big bang
    20

    the big bang

    Sometime between 13 and 20 billion years ago The center of the Universe The Big Bang probably occurred.