Planets, star, etc are basically just a large blob of elements/particles. They are formed by particles colliding and combining with each other.
Take yourself and another person. Walk in straight lines toward each other, and when you meet lock arms like youre at a rodeo. Keep trying to walk in your original direction. You won’t get anywhere, you’ll just start spinning. Repeat over and over again with billions and trillions of particles and eventually you have a spinning planet
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