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quasar
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The answer QUASAR has 40 possible clue(s) in existing crosswords.
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The word QUASAR is VALID in some board games. Check QUASAR in word games in Scrabble, Words With Friends, see scores, anagrams etc.
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Definitions of quasar in various dictionaries:
noun - a starlike object that may send out radio waves and other forms of energy
A starlike object that has a large red shift and emits powerful blue light and often radio waves.
noun - a distant celestial object emitting strong radio waves
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From "quasi-stellar object", a heavenly body that looks like a star but isn't |
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An extremely distant, and thus old, celestial object whose power output is several thousand times that of our entire galaxy. |
a massive and extremely remote celestial object, emitting exceptionally large amounts of energy, which typically has a starlike image in a telescope. It has been suggested that quasars contain massive black holes and may represent a stage in the evolution of some galaxies. |
a starlike object that may send out radio waves and other forms of energy large red shifts imply enormous recession velocities |
the centre of a galaxy ( group of stars) that is very far away, producing large amounts of energy |
Quasar description |
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A quasar () (also known as a QSO or quasi-stellar object) is an extremely luminous active galactic nucleus (AGN). Most large galaxies contain a supermassive central black hole with mass ranging from millions to billions of Solar masses. In quasars and other types of AGN, the black hole is surrounded by a gaseous accretion disk. As gas in the accretion disk falls toward the black hole, energy is released in the form of electromagnetic radiation. This radiation can be observed across the electromagnetic spectrum at radio, infrared, visible, ultraviolet, and X-ray, and gamma wavelengths. The power radiated by quasars is enormous: the most powerful quasars have luminosities exceeding 1041 watts, thousands of times greater than an ordinary large galaxy such as the Milky Way.The term "quasar" originated as a contraction of quasi-stellar [star-like] radio source, because quasars were first identified during the 1950s as sources of radio-wave emission of unknown physical origin, and when iden |