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Albert Einstein’s theory of general relativity has been remarkably successful in describing the gravity of stars and planets, but it doesn’t seem to apply perfectly on all scales.

December 28, 2021 - 2:41 pm For more than 100 years, Albert Einstein’s general theory of relativity has been our best description of how the force of gravity acts throughout the Universe.

Albert Einstein’s note on the theory of happiness sold on Tuesday for $1.3 million at a Jerusalem auction, handing over the scientist’s 1922 musings to unknown buyers.

The preparatory manuscript to the theory of general relativity of Albert Einstein, during their presentation a day before being auctioned at Christie's auction house in Paris, Nov. 22, 2021.

It specifically shows two of the so-called Eddington parameters that measure how a theory may deviate from Einstein’s gravity (which is characterized by β=γ=1).