The boundary around a black hole beyond which no light or radiation can escape. Once matter crosses it, it is inevitably pulled toward the singularity. The size depends on the black hole's mass and is described by the Schwarzschild radius.
A region of spacetime where gravity is so strong that nothing, not even light, can escape once past the event horizon. B...
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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