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Black hole - Wikipedia
https://en.wikipedia.org/wiki/Black_hole
WEBA black hole is a region of spacetime where gravity is so strong that nothing, including light and other electromagnetic waves, is capable of possessing enough energy to escape it. Einstein's theory of general relativity predicts that a sufficiently compact mass can deform spacetime to form a black hole.
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What Are Black Holes? - NASA
https://www.nasa.gov/universe/what-are-black-holes/
WEBSep 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.
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Black hole | Definition, Formation, Types, Pictures, & Facts
https://www.britannica.com/science/black-hole
WEB2 days ago · 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.
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Black holes: Everything you need to know | Space
https://www.space.com/15421-black-holes-facts-formation-discovery-sdcmp.html
WEBMay 6, 2022 · Black holes are some of the strangest and most fascinating objects in space. They're extremely dense, with such strong gravitational attraction that not even light can escape their grasp. The...
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What Is a Black Hole? - National Geographic
https://www.nationalgeographic.com/science/article/black-holes
WEBThere are four types of black holes: stellar, intermediate, supermassive, and miniature. The most commonly known way a black hole forms is by stellar death. As stars reach the ends of their...
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Black Holes - NASA Science
https://science.nasa.gov/universe/black-holes/
WEBA black hole is so dense that gravity just beneath its surface, the event horizon, is strong enough that nothing – not even light – can escape. The event horizon isn’t a surface like Earth’s or even the Sun’s. It’s a boundary that contains …
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Black Holes | Center for Astrophysics | Harvard & Smithsonian
https://www.cfa.harvard.edu/research/topic/black-holes
WEBBlack holes are some of the most fascinating and mind-bending objects in the cosmos. The very thing that characterizes a black hole also makes it hard to study: its intense gravity. All the mass in a black hole is concentrated in a tiny region, surrounded by a boundary called the “event horizon”.
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What Is a Black Hole? | NASA Space Place – NASA Science for …
https://spaceplace.nasa.gov/black-holes/en/
WEBApr 17, 2024 · A black hole is an area of such immense gravity that nothing—not even light—can escape from it. Black holes form at the end of some stars’ lives. The energy that held the star together disappears and it collapses in on itself producing a magnificent explosion. Here’s where things get crazy.
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NASA Telescopes Discover Record-Breaking Black Hole
https://www.nasa.gov/missions/chandra/nasa-telescopes-discover-record-breaking-black-hole/
WEBNov 6, 2023 · Article. Astronomers have discovered the most distant black hole yet seen in X-rays, using NASA telescopes. The black hole is at an early stage of growth that had never been witnessed before, where its mass is similar to that of its host galaxy. This result may explain how some of the first supermassive black holes in the universe formed.
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What is a black hole? - Exploring Black Holes - NSF
https://new.nsf.gov/blackholes/what-is-a-black-hole
WEBAnything that passes too close, from a wandering star to a photon of light, gets captured. Most black holes are the condensed remnants of a massive star, the collapsed core that remains following an explosive supernova.
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