Term

General relativity

Einstein, 1915: gravity is not a force but geometry. Mass bends space and time, and bodies simply roll along that dent.

Brief Answers to the Big Questions, Stephen Hawking

Explained in

• Brief Answers to the Big Questions, Stephen Hawking
• The Elegant Universe: Superstrings, Hidden Dimensions, and the Quest for the Ultimate Theory, Brian Greene

  The theory of gravity Einstein completed in 1915: mass curves space and time, and that curvature makes bodies move as if they were pulled toward each other.

• A Brief History of Time: From the Big Bang to Black Holes, Stephen Hawking

  Einstein's theory of gravity (1915): massive bodies curve space and time. It describes stars, galaxies and the universe as a whole.

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