History of the Earth

By julia.fang
  • Planetary Accretion
    4600 BCE

    Planetary Accretion

    Lots of rocks and dust get pulled together by gravity to form the earth which, at the time, was molten and extremely hot and dangerous.
  • Formation of the Moon
    4500 BCE

    Formation of the Moon

    It is theorized that a Mars-sized planet named Theia collided with earth and formed the moon.
  • Planetary Cooling
    4000 BCE

    Planetary Cooling

    The Earth cools and the crust forms
  • Core Formation
    4000 BCE

    Core Formation

  • End of Heavy Bombardment
    3800 BCE

    End of Heavy Bombardment

    The end of the constant meteors, asteroids and failed planets crashing into the surface of Earth.
  • First Appearance of Life
    3500 BCE

    First Appearance of Life

    The first signs of life appeared on Earth