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Quasar - Wikipedia
https://en.m.wikipedia.org/wiki/Quasar
WebA quasar ( / ˈkweɪzɑːr / KWAY-zar) is an extremely luminous active galactic nucleus (AGN). It is sometimes known as a quasi-stellar object, abbreviated QSO. The emission from an AGN is powered by a supermassive black hole with a mass ranging from millions to tens of billions of solar masses, surrounded by a gaseous accretion disc.
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Quasar | Discovery, Structure & Evolution | Britannica
https://www.britannica.com/science/quasar
WebApr 5, 2024 · Quasar, an astronomical object of very high luminosity found in the centres of some galaxies and powered by gas spiraling at high velocity into an extremely large black hole. The brightest quasars can outshine all of the stars in the galaxies in which they reside, which makes them visible even at.
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What is a quasar? - EarthSky
https://earthsky.org/astronomy-essentials/definition-what-is-a-quasar/
WebFeb 28, 2021 · What is a quasar? The word quasar stands for quasi-stellar radio source. Quasars got that name because they looked starlike when astronomers first began to notice them in the late 1950s and early 60s.
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Quasars: Brightest Objects in the Universe - Space.com
https://www.space.com/17262-quasar-definition.html
WebOct 19, 2023 · Quasars: Everything you need to know about the brightest objects in the universe. References. By Keith Cooper. last updated 19 October 2023. Quasars are the blazing centers of active galaxies...
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What Is a Quasar? - Sky & Telescope - Sky & Telescope
https://skyandtelescope.org/astronomy-resources/what-is-a-quasar/
WebSep 28, 2021 · Quasar is short for quasi-stellar radio source, because astronomers first discovered quasars in 1963 as objects that looked like stars but emitted radio waves. Now, the term is a catch-all for all feeding, and therefore luminous supermassive black holes, also often called active galactic nuclei.
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NASA's Webb to Study Quasars and Their Host Galaxies in Three
https://www.nasa.gov/universe/nasas-webb-to-study-quasars-and-their-host-galaxies-in-three-dimensions/
WebAug 19, 2020 · This energy creates a brilliant and powerful galactic core called a quasar, whose light can greatly outshine its host galaxy. Quasars—accreting supermassive black holes—are paradoxically some of the brightest objects in the universe.
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NASA’s Webb Will Use Quasars to Unlock the Secrets of the Early
https://www.nasa.gov/universe/nasas-webb-will-use-quasars-to-unlock-the-secrets-of-the-early-universe/
WebJun 23, 2021 · A quasar is a very bright, distant and active supermassive black hole that is millions to billions of times the mass of the Sun. Among the brightest objects in the universe, a quasar’s light outshines that of all the stars in its host galaxy combined.
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Brightest quasar ever seen is powered by black hole that eats a …
https://www.space.com/brightest-quasar-ever-powered-black-hole-solar-mass-accretion-disk
Webpublished 19 February 2024. The quasar, as bright as 500 trillion suns, has evaded astronomers for over 40 years because of its incredible luminosity. Comments (2) An illustration of the...
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Black Holes, Quasars, and Active Galaxies - ESA/Hubble
https://esahubble.org/science/black_holes/
WebToday most astronomers believe that quasars, radio galaxies and the centres of so-called active galaxies just are different views of more or less the same phenomenon: a black hole with energetic jets beaming out from two sides. When the beam is directed towards us we see the bright lighthouse of a quasar.
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NASA's Hubble Helps Astronomers Uncover the Brightest Quasar in …
https://science.nasa.gov/missions/hubble/nasas-hubble-helps-astronomers-uncover-the-brightest-quasar-in-the-early-universe
WebJan 9, 2019 · Astronomers have discovered the brightest object ever seen from a time when the universe was less than one billion years old, with the help of NASA's Hubble Space Telescope. The brilliant beacon is a quasar, the core of a galaxy with a black hole ravenously eating material surrounding it.
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