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- Quasar - Wikipedia
The radiant energy of quasars is enormous; the most powerful quasars have luminosities thousands of times greater than that of a galaxy such as the Milky Way [2][3] Quasars are usually categorized as a subclass of the more general category of AGN
- Hubble Quasars - NASA Science
They are distant galaxies whose incredibly bright cores are powered by supermassive black holes Quasars have been found with luminosities between 10 to 100,000 times that of our Milky Way galaxy, generated from an area just a few light-days to a few light-years across
- Quasars: Brightest Objects in the Universe
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 An active galaxy
- Quasar | Discovery, Structure Evolution | Britannica
The tremendous light generated by quasars and their great distance from Earth work to obscure the fainter galactic structures in which they are embedded This quasar is apparently fueled by a collision between its host galaxy and a dwarf galaxy
- Quasar – Definition, Formation, Facts in Astronomy
Learn what a quasar is in astronomy, how it forms, types of quasars, and what they tell us about the early universe
- What is a quasar? - EarthSky
Bottom line: Quasars are extremely bright and extremely distant objects Their huge energy output is thought to be due to activity around the central supermassive black hole in young galaxies
- What is Quasar? - ABOUT SCIENCE
In the vast expanse of our universe, certain objects shine with such tremendous energy that they outshine entire galaxies These extraordinary cosmic beacons are known as quasars
- Quasar - ESA Hubble
Quasars are a subclass of active galactic nuclei (AGNs), extremely luminous galactic cores where gas and dust falling into a supermassive black hole emit electromagnetic radiation across the entire electromagnetic spectrum
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