Gravity Lessons

Follow this sequence of lessons to learn about gravity, from Newton’s law and planetary orbits to Einstein’s general relativity and black holes!

Deriving the Orbit of Our Home Planet

The Trick for Finding Earth’s Orbit with One Line of Math

Explaining the Principle of Least Action

The Life of a Particle in Special Relativity

The Life of a Particle in General Relativity

General Relativity: From Planetary Orbits to Black Holes

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