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Planets, orbits, and comets are somewhat round. Is there an underlying mechanism or physical law? | Astronomy.com
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Planets, orbits, and comets are somewhat round. Is there an underlying mechanism or physical law?

William J. Lyons, Marshfield, Massachusetts
Jupiter
Yes, gravity pulls material toward a central point. The force of gravity is also responsible for the elliptical, and occasionally circular, shapes of orbits.

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