# Universal Gravitation

Describe gravity as a universal attractive force between all masses, explain that orbital motion arises because gravity provides the centripetal force keeping objects in orbit, and compare gravitational field strengths on different planets

Builds on: The solar system (age 11+) (hard, https://ai.page/c/the-solar-system-age-11/en.md), Mass vs Weight (hard, https://ai.page/c/mass-vs-weight/en.md)

Concept id: universal-gravitation. Subject: science. Licence: CC BY-SA 4.0.

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