Large Scale Timeline

  • 138 BCE

    Big Bang (13.8 billion years ago)

    Big Bang (13.8 billion years ago)
    An infinitely dense particle explodes, creating all of the mass of the universe.
  • 137 BCE

    Stars Light Up (13.7 billion years ago)

    Stars Light Up (13.7 billion years ago)
    Gravity causes dense regions of hydrogen clouds to clump together, lighting up the first stars.
  • 137 BCE

    New Chemical Elements (13.7 billion years ago)

    New Chemical Elements (13.7 billion years ago)
    Stars explode, creating new chemical elements.