- Quasar - Wikipedia
It is sometimes known as a quasi-stellar object, abbreviated QSO The emission from an AGN is powered by accretion onto a supermassive black hole with a mass ranging from millions to tens of billions of solar masses, surrounded by a gaseous accretion disc
- Quasar Framework
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- Quasar | Discovery, Structure Evolution | Britannica
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
- Quasars — Everything you need to know about the brightest objects in . . .
Quasars are the remarkably bright cores of active galaxies in the distant universe, they are an extreme form of what astronomers call "active galactic nuclei", or AGN for short
- Quasar – Definition, Formation, Facts in Astronomy
A quasar, short for “quasi-stellar radio source,” is the brightest and most energetic object in the universe Quasars are the active cores of distant galaxies, powered by supermassive black holes devouring surrounding matter
- Hubble Quasars - NASA Science
Among its quasar observations, in 2019 Hubble found the brightest quasar known in the early universe by using a combination of its sharp vision and a natural gravitational lens in space to see the distant object
- What is a quasar? - EarthSky
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
- What Is a Quasar? - Sky Telescope
A quasar is a supermassive black hole feeding on gas at the center of a distant galaxy 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
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