Planets are round because of gravity. Imagine you have a ball of clay, and you keep throwing more clay on it, eventually, it becomes a sphere. Gravity pulls everything toward the center, making planets round like balls.
Examples
- A big ball of playdough squeezed by gravity becomes a round planet.
- Throwing more clay on a ball makes it smoother and rounder.
- Even Earth has a slight bulge at the equator, like a slightly squished orange.
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See also
- How Do Planets Stay in Their Orbits?
- How Do Planets Stay in Orbit Around the Sun?
- How Does Gravity Work on Other Planets?
- What Causes ‘Gravity’ and How Does It Affect Other Planets?
- How Does Gravity Hold the Planets in Place?
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