Billions of Years Ago

By Lillllliaaan
  • 4500 BCE

    Formation of the Moon

    About 4.5 billion years ago. The mooned formed.
  • 4500 BCE

    End of Heavy Bombardment

    Around 4.5- 3.8 billion years ago. Asteroids and planets colliding.
  • 4000 BCE

    Planetary Accretion

    Around 4.6 billion years ago. Galaxies formed.
  • 4000 BCE

    Planetary Cooling

    About 4.5-3.8 billion years ago. Planets began to start to cool off.
  • 1500 BCE

    Core Formation

    1.5-1 billion years ago. A rough estimate when the Earth's core was formed.