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A "black hole", theorized by Stephen Hawking as a point with gravity so high that the escape velocity would exceed the speed of light. At the time, it was a revolutionary concept; since then, astronomers have gathered evidence of several black holes.
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ProfessorA black hole is an object in space with such intense gravity that not even light can escape from it. When an object crosses the event horizon, the point of no return around a black hole, it gets pulled in by the strong gravitational forces, making it impossible for anything, including light, to escape.
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What causes the light from far away galaxies to bend?
If the light from a distance galaxy passes near a massive cosmic object, then the gravity of that object will distort space-time. That will cause the light to bend.
Is black hole celestial body or not?
Yes, black holes are celestial bodies. They are regions in space where gravity is so strong that nothing, not even light, can escape from them. They are formed when massive stars collapse at the end of their life cycle.
What is the basic definition of a black hole?
A black hole is a region of space in which gravitation is so strong that not even light can escape found at the centers of galaxies and also as the final stage after the death of very massive stars.
What is escape volocity?
Escape velocity is the minimum speed that an object must reach to break free from the gravitational pull of a celestial body. This velocity allows the object to overcome the body's gravitational force and enter into space. The specific value of escape velocity depends on the mass and radius of the celestial body.
If gravity waves travel at the speed of light and black holes' escape velocity is much greater than the speed of light then how can gravity waves escape a black hole?
Gravity waves can escape black holes because they do not carry matter or energy themselves, unlike light or particles. Gravity waves are fluctuations in spacetime itself, and can pass through the event horizon of a black hole without being trapped by its intense gravitational pull. This is why we can detect gravity waves emitted by merging black holes outside their event horizon.
