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Black Holes and the Penrose-Hawking Singularity Theorem
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What is the event horizon of a black hole?
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A
The boundary beyond which nothing, not even light, can escape from the black hole.
💡 Explanation:
The event horizon is the boundary beyond which the gravitational pull of the black hole is so strong that nothing, not even light, can escape from it. This is because the escape velocity at the event horizon is greater than the speed of light.