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Newton publishes a three-volume work, containing his discoveries of gravity and how it affects planetary orbits, as well as trajectories of asteroids.
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One of Britain's leading scientists proposes that some stars could possess enough surface gravity to prevent light from escaping. These were dubbed "Dark Stars".
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Einstein's Theory of General Relativity now includes equations that gravity is a "warp" in spacetime. The more the mass of matter, the more it warps the spacetime around it.
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The mathematician presents his theory that black holes warp spacetime around themselves similar to water swirling around a drain - in a circular spiral fashion.
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Hawking proves that black holes emit radiation, causing them to evaporate, and that they are not actually black in colour.
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The last puzzle of Einstein's theory of relativity solved: LIGO detects ripples in spacetime, known as gravitational waves, which were created from two colliding black holes.
