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The collection of rock and dust into the formation of a planet.
This is when the first form of Earth has formed, it is dust. It happened 4.6 bill years ago. -
From the ring after the core has formed, a rock came out which became our moon. Earth, used to be known as Theia, collided with a Mars-sized planet. The collision launched debris out and that debris started orbiting Earth.
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As the Theia collided with the Earth, they both were blown away and Earth was thrown in the space.
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The dust after the collision with Theia has been pulled into a cloud of hot dust, forming the basis of the Earth we have right now, or not just yet but the core.
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From 4billion BCE to 3.8Billion BCE, there was planetary cooling, which the hot Earth, rising up to 1200°c started to cool down until our daily temperature today. Earth became stable enough to have a rocky terrain, clouds, and enough rainwater to form oceans.
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The meteoroids stopped falling, Earth was filled with ocean because, inside the meteor, there were salt minerals making the ocean for the Earth.
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https://en.wikipedia.org/wiki/Earliest_known_life_forms
Life has formed 3.5 million years ago during the Eoarchean Era.
