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1. en.wikipedia.org › wiki › Black_holeBlack hole - Wikipedia

   en.wikipedia.org › wiki › Black_hole

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   A black hole is a region of spacetime wherein gravity is so strong that no matter or electromagnetic energy (e.g. light) can escape it. [2] Albert Einstein's theory of general relativity predicts that a sufficiently compact mass can deform spacetime to form a black hole. [3] [4] The boundary of no escape is called the event horizon.

2. www.nasa.gov › universe › what-are-black-holesWhat Are Black Holes? - NASA

   www.nasa.gov › universe › what-are-black-holes

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   8 Σεπ 2020 · Learn about the three main classes of black holes: stellar-mass, intermediate-mass and supermassive. Find out how they form, grow, emit and interact with their surroundings.

3. www.britannica.com › science › black-holeBlack hole | Definition, Formation, Types, Pictures, & Facts |...

   www.britannica.com › science › black-hole

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   4 ημέρες πριν · 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.

4. science.nasa.gov › universe › black-holesBlack Holes - NASA Science

   science.nasa.gov › universe › black-holes

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   Black holes are among the most mysterious cosmic objects, much studied but not fully understood. These objects aren’t really holes. They’re huge concentrations of matter packed into very tiny spaces.

5. www.nationalgeographic.com › science › articleWhat Is a Black Hole? - National Geographic

   www.nationalgeographic.com › science › article

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   Black holes are points in space that are so dense they create deep gravity sinks. Beyond a certain region, not even light can escape the powerful tug of a black hole's gravity.

6. www.space.com › 1542Black holes: Everything you need to know | Space

   www.space.com › 1542

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   6 Μαΐ 2022 · Black holes are real, they're some of the strangest objects in space. Discover what black holes are and how they form with our informative black hole guide.

7. www.astronomy.com › science › black-holes-explained-by-an-astrophysicistBlack holes, explained by an astrophysicist - Astronomy Magazine

   www.astronomy.com › science › black-holes-explained-by-an-astrophysicist

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   11 Δεκ 2023 · A black hole is a region of universe where gravity is so outrageously strong that nothing, not even light, can escape. Once something enters a black hole by crossing an invisible boundary known...