| 单词 | quasar |
| 释义 | quasar (once / 36706 pages) n A quasar is a starlike object in space that may emit energy, light, and radio waves. In the vastness of the universe, there are many bodies such as planets, moons, asteroids, and suns. Another type of object is the quasar. Quasars are a lot like suns, though much smaller. Quasars have large redshifts, which means the light from the quasar increases in frequency, moving to the red part of the light spectrum. Quasars are powerful and usually produce a lot of radiation. Don't mess with a quasar! WORD FAMILYquasar: quasars USAGE EXAMPLESToday, however, scientists keep track of it by aiming a network of radio telescopes at a distant quasar. Seattle Times(Jan 01, 2017) It’s possible it was a message from another civilization or just the effect of a natural space object, like a pulsating quasar. The Verge(Aug 29, 2016) Dad explained light-years and black holes and quasars and told us about the special qualities of Betelgeuse, Rigel, and Venus. Jeannette Walls, The Glass Castle(2005) n a starlike object that may send out radio waves and other forms of energy; many have large red shifts Syn|Hyper quasi-stellar radio source celestial body, heavenly body natural objects visible in the sky |
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