A region of spacetime where gravity is so strong that nothing, not even light, can escape once past the event horizon. Black holes form when massive stars collapse at the end of their life cycle. Supermassive black holes exist at the centers of most galaxies.
The boundary around a black hole beyond which no light or radiation can escape. Once matter crosses it, it is inevitably...
A point where matter density and spacetime curvature become infinite, as predicted by general relativity. Singularities ...
A rotating disk of gas, dust, and other matter that forms around a massive body such as a black hole, neutron star, or y...
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