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Planetary Science

Why do the planets all orbit in one direction?

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March 26, 2018 8:17AM

The Sun and planets were all most likely formed from a single gas cloud several billion years ago. The center of this region became compressed under gravity, while the planets formed from areas of higher density which could attract more matter. Everything in the solar system maintained the initial spin of that cloud, and so all the planets orbit the Sun in the same direction.