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Internet Search Results
Quasar - Wikipedia
Quasar luminosities can vary considerably over time, depending on their surroundings. Since it is difficult to fuel quasars for many billions of years, after a quasar finishes accreting the surrounding gas and dust, it becomes an ordinary galaxy.
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Hubble Quasars - NASA Science
Quasars occur when immense amounts of matter fall into a supermassive black hole, spiraling around it in the form of a disk before entering.
Quasars — Everything you need to know about the brightest ...
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
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.
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
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...
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.
Quasars – Definition & Detailed Explanation - Sentinel Mission
Quasars, short for quasi-stellar radio sources, are extremely bright and distant celestial objects that emit massive amounts of energy. They are considered to be the most luminous objects in the universe, outshining entire galaxies by billions of times.
NASA's Webb to Study Quasars and Their Host Galaxies in Three ...
Quasars—accreting supermassive black holes—are paradoxically some of the brightest objects in the universe. Astronomers widely consider the energy from quasars to be the main driver in limiting the growth of massive galaxies.
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