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What is a black hole & how does it work?
How does a black hole Produce X-ray light?
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Science fiction has often relied on the concept of black holes as a plot device, painting them as portals to other universes or as vehicles for time travel. But what happens when we take the fiction out of it? What’s really going on inside those terrifying faraway entities?
Sep 8, 2020 · A black hole is an astronomical object with a gravitational pull so strong that nothing, not even light, can escape it. A black hole’s “surface,” called its event horizon, defines the boundary where the velocity needed to escape exceeds the speed of light, which is the speed limit of the cosmos.
A black hole is a region of spacetime where gravity is so strong that nothing, not even light and other electromagnetic waves, is capable of possessing enough energy to escape it. [2] Einstein's theory of general relativity predicts that a sufficiently compact mass can deform spacetime to form a black hole.
Anything closer than a sphere around the body of that radius would travel through a surface of no return, the black hole’s event horizon. The most obvious source of such a body would be a collapsing star. In normal operation, a star’s nuclear reactions fluff it up against the pull of gravity.
Black holes can be surrounded by rings of gas and dust, called accretion disks, that emit light across many wavelengths, including X-rays. A supermassive black hole’s intense gravity can cause stars to orbit around it in a particular way.
Oct 10, 2024 · Black hole, cosmic body of extremely intense gravity from which nothing, not even light, can escape. It can be formed by the death of a massive star wherein its core gravitationally collapses inward upon itself, compressing to a point of zero volume and infinite density called the singularity.
Sep 30, 2022 · What are Black Holes? A black hole is a region of space packed with so much matter that its own gravity prevents anything from escaping — even a ray of light. Although we can’t see a black hole, the material around it is visible.
