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[Link] Why do the planets in the solar system orbit on the same plane?

Read: 1/10/2021 www.livescience.com

If you've ever gazed at a  model of the solar system, you've likely noticed that the sun, planets, moons and asteroids sit roughly on the same plane. But why is that? To answer this question, we have to travel to the very beginning of the solar system, about 4.5 billion years ago.

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