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Then, Albert Einstein solved the tension by coming up with the theory of relativity, which explains how massive objects cause distortions in spacetime.

Wigner realized that using principles derived from Albert Einstein's theory of relativity, he could describe all the possible elementary particles in the universe, even those that hadn't been discovered yet.

High-energy muons traveling at near–light-speed endure longer, for milliseconds, because of the time dilation predicted by Einstein’s theory of relativity.

The general theory of relativity, published by Albert Einstein over a century ago, predicted that black holes could have any mass.

Here, the theory goes, all physical laws, including Einstein's general theory of relativity, no longer apply; the principle of causality is suspended.