-
The collection of rock and dust into the formation of a planet.
-
The formation of the moon began when a wandering planet crashed into Earth, eventually breaking into pieces and forming the moon.
-
The cooling of the Earth's molten state, causing it to harden and become the solid it is today.
-
This era was also known as the lunar cataclysm, where Earth was repetitively struck by huge meteors.
-
The formation of the Earth's core, which was composed mainly of iron.
