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The particles and materials that come to make up the Earth are gathering together and merging into one larger body.
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The Earth begins as a mass of space dust that grows closer and closer together and eventually forms the earliest form of the Earth.
4.56 Billion years ago -
The Earth is being bombarded by rocks and space stuff. Some of the space stuff contains water and other elements.
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The moon is formed by a large protoplanet crashing into Earth, with the ruble eventually becoming our moon.
4.4 Billion years ago -
During this time the surface of the Earth is cooling, and the crust of the Earth is slowly forming whilst the hot dense core is also forming in the center of the Earth.