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Gravity pulls dusts into tiny rocks, and over millions of years, gravity has pulled in these rocks to form the Earth.
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Both planets turn to liquid. Gravity pulls the debris to form a red hot ring that circles the Earth.
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4-3.8 billion years ago, volcanic eruptions contained magma, after the magma hardened, Earth became cooled and formed a crust.
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In the ring that circles the Earth, a ball formed, and that is our moon.
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Failed planets and smaller asteroids slammed into larger worlds, scarring their surface. Comets that contained water in them, and that brought H2O on to Earth. These comets might be materials flung from the early motions of Uranus and Neptune.
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The core formed during accretion, as metal from impactors sank through a magma ocean to the center of the Earth.
