Which force is described by Einstein's theory of general relativity?
Quick Answer
Gravity is described by Einstein's general relativity. The theory, published in 1915, explains gravity as the curvature of spacetime.
The Full Story
General relativity is the modern theory of gravity. Einstein published it in 1915, replacing the older idea of gravity as a simple force acting at a distance with the concept of curved spacetime. Massive objects like stars and planets bend spacetime, and other objects follow those curves. The theory has passed many tests, including the orbit of Mercury, gravitational lensing and the detection of gravitational waves. It remains essential in cosmology, black-hole physics and GPS corrections.
Key Facts
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