Question: How did earth come to be?

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  1. Before our solar system existed the space was occupied by lost of bits of dust, gas and rock. The force of gravity acts to pull things together, and heavier things have more gravity. So the idea is that some of those bits of dust gas and rock started clumping together because of gravity to make bigger rocks and balls of gas. Then those bigger ones have more gravity so they suck in the small ones and get bigger and bigger.

    A large ball of hydrogen formed, which is our sun, and one of those other very large clumps of rock, water, and gas became the earth. Then because the sun’s gravity is bigger than the earth, it holds the earth in orbit and the light and heat from the sun allowed the earth to change enough to support life.