Historical Theories of the Universe

  • 100 BCE

    The Big Bang

    The Big Bang
    Beginning of Space and Time (Date is 13.8 Ga)
  • 99 BCE

    Reionization era begins

    Reionization era begins
    Early stars start ionising interstellar gas (Date is 13.6 Ga
  • 98 BCE

    Black Holes

    Black Holes
    First Black Holes Form (Date is 13.5 Ga)
  • 97 BCE

    Mass Star Formation

    Mass Star Formation
    Universe starts to heat once again (Date is 13.2 Ga)
  • 97 BCE

    Galaxies

    Galaxies
    First Galaxies Form (Date is 13.2 Ga)
  • 96 BCE

    Milky Way

    Milky Way
    Milky Way Forms (Date is 12.6 Ga)
  • 95 BCE

    Dark Energy Theory

    Dark Energy Theory
    Oldest known evidence for dark energy (Date is 9 Ga)
  • 94 BCE

    Dark Energy

    Dark Energy
    Dark Energy overtakes gravity (Date is 6 Ga)
  • 93 BCE

    Solar Nebula

    Solar Nebula
    Solar Nebula starts Collapsing (Date is 5.5 Ga)
  • 92 BCE

    The Sun

    The Sun
    The Sun Forms (Date is 4.57 Ga)
  • 91 BCE

    Oceans

    Oceans
    Oceans form on Earth (Date is 4.4 Ga)
  • 91 BCE

    Minerals

    Minerals
    First Known Minerals (Date is 4.4 Ga)
  • 90 BCE

    Life

    Life
    Life Emerges on Earth (Date is 4.2 Ga)
  • 89 BCE

    Tectonic Plates

    Tectonic Plates
    Movement of Tectonic Plates commences (Date is 2.5 Ga)
  • 88 BCE

    Mammals

    Mammals
    First Mammals (Date is 225 Ma)
  • 87 BCE

    Birds

    Birds
    First Birds (Date is 155 Ma)