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4600 BCE
Terrestrial Planet Accretion
Terrestrial Planet Accretion was the believed way the earth was formed -
4500 BCE
Formation of the Moon
When a planet-sized object hit the surface of Earth, the debris of that object slowly became Moon. -
4300 BCE
Earth Cooling down
about 3.7- 4.3 billion years ago, after all the small debris stopped crashing into Earth, Earth started to cool down. -
3800 BCE
Earth Core Formation
Earth's core started to form around the time the accretion process ended. As the planet starts to cool, the most dense elements sink to the interior and the least dense rise to the top, resulting in different layers. A thick crust then forms on the surface. The core was formed through what is called Core Accretion. -
3700 BCE
End of Heavy Bombardment
The end of the Heavy Bombardment was assumed to be around 3.5-4.1 billion years ago.