The conversation between human and AI assistant.
Why does the earth rotate on its axis?
Could you explain how that works?
Sure! When the solar system formed, the dust and gas that made up the system started to collapse under gravity. As it collapsed, it began to spin faster and faster, causing it to flatten out into a disk shape. This same spinning motion caused the protoplanets to also start rotating in the same direction as the disk. The earth formed from these protoplanets and has been rotating ever since.