The History of The Earth

By Jiyu Lee
  • 14,000 BCE

    Big Bang

    Big Bang
  • 14,000 BCE

    Hydrogen and Helium

    Hydrogen and Helium
    During the Big Bang, only the lightest elements were formed which were hydrogen and helium. Those two elements were the building blocks of everything we see today.
  • Period: 14,000 BCE to

    The History of The Earth

  • 4500 BCE

    Birth of the Sun (Supernova)

    Birth of the Sun (Supernova)
    The solar system began as a gas cloud that moved around the galaxy but one day a star exploded causing a gravitational collapse forming the Sun and protoplanetary disk around it.
  • 4500 BCE

    Primary Accretion Stage

    Primary Accretion Stage
    The dusts collide into each other and forms little clumps which continue about 10 million years. The inner part of the solar system had rocky planetesimals becoming planet embryos. In the outer part of the solar system were colder allowing the clumps to attach more easily which made bigger planets.
  • 4500 BCE

    Giant Impact Stage - formation of the Moon

    Planetesimals become planets by colliding with each other. Four rocky planets in the interior, two gas giants Jupiter and Saturn, and two ice giants Uranus and Neptune. A planetoid size of Mars crashed to Earth and part of the Earth were broken and orbited around the Earth, which is the moon that we see today.
  • 4400 BCE

    Planetary Cooling

    Planetary Cooling
    The moon forming impacted the Earth and the Earth was left with hot lava and magma. When the Earth cooled down, the lava changed into rocks and water was condensed.
  • 3800 BCE

    Late Heavy Bombardment

    Late Heavy Bombardment
    Jupiter and Saturn migrated to the inner part of the solar system clearing out the rocks in its way and migrated back out. The rocks and asteroids and comets were carried by Jupiter and Saturn who rained on the Earth supplying water vapor to the Earth.
  • 2900 BCE

    Earth Cools & Core Formation

    The heat in the core tries to escape the Earth and additional radioactive elements heat even more. It allows activity in the core, and it is the source of strong magnetic fields around the earth. It also broke up the continents and created the tectonic plates.
  • 1500 BCE

    Earth's Core Formation

    Earth's Core Formation
    Since the Earth was burning hot, rocks and metal meltdown. The gravity in Earth pulled down dense objects like iron into the center. Which explains how the core contains large amount of iron in it.

  • 2020

    2020