Theory of Relativity
Einstein's theory that describes gravity not as a force, but as the curvature of spacetime caused by mass and energy, establishing the speed of light as the ultimate speed limit.
Videos Mentioning Theory of Relativity

Brian Greene: Quantum Gravity, The Big Bang, Aliens, Death, and Meaning | Lex Fridman Podcast #232
Lex Fridman
Einstein's theory of gravity, which describes gravity as a curvature of spacetime caused by mass and energy, and allows for the existence of phenomena like black holes and time dilation in gravitational fields.

Andrew Strominger: Black Holes, Quantum Gravity, and Theoretical Physics | Lex Fridman Podcast #359
Lex Fridman
Einstein's theory that describes gravity not as a force, but as the curvature of spacetime caused by mass and energy, establishing the speed of light as the ultimate speed limit.

Tomaso Poggio: Brains, Minds, and Machines | Lex Fridman Podcast #13
Lex Fridman
A physics theory that fascinated Tommaso Poggio in his childhood and was discovered by Einstein.

How to Build a Universe: A Conversation with Frank Wilczek (Episode #238)
Sam Harris
Explains gravity as the curvature of spacetime, treating spacetime as a dynamic entity that can bend and warp.

#askFermilab: Dark Matter Day Q&A
Fermilab
Einstein's theory that explains gravity as a consequence of spacetime curvature caused by mass and energy.