quasar

 Longman Dictionary of Contemporary English 5++朗文当代英语 5++LDOCE 5++朗文 5++

Related topics: Astronomy

qua·sar /ˈkweɪzɑː $ -ɑːr/ noun [countable]  technicalHA an object in space that is similar to a star and that shines very brightly 类星体 → pulsar

Examples from the Corpus

quasar• Discovered in the early 1960s, quasars at first seemed to be small, bright stars.• Perhaps part of the redshift in quasars and unusual galaxies is not, after all, due to the expanding Universe.• Recent studies of quasars have identified multiple images produced in this way.• Another team reported finding where all the old quasars have gone.• Astron will also observe the very distant and powerful quasars.• It seems inescapable that two images of a single quasar have been observed.• Intense searches have revealed no optical or other signal from the partner, nor does it eclipse the quasar.• The quasar pair UM673A and UM673B both have red shifts of 2.72 and are separated by 2.2 arcsec.Origin quasar (1900-2000) quasi-stellar

qua·sar nounChineseSyllable  

Corpus object is a to an in space similar that

quasar
qua‧sar /ˈkweɪzɑː $ -ɑːr/ noun [countable]technical an object in space that is similar to a star and that shines very brightly ⇨ pulsar
     

THESAURUS

■ in the sky
   ▪ star a large ball of burning gas in space, which can be seen at night as a point of light in the sky: The dark night sky was clear and full of stars.
   ▪ planet one of the large objects that goes around the sun, for example the Earth, Saturn, Mercury, or Mars: The planet Uranus was discovered in 1781.
   ▪ sun the star that gives us light and heat, around which the planets move. There are also many millions of other suns in the universe: The sun came out from behind a cloud. | a dying sun
   ▪ moon the round object that moves around the Earth every 28 days, or a similar object that goes around another planet: The moon rose in the night sky. | Titan is one of the moons of Saturn.
   ▪ asteroid a mass of rock that moves around the sun. Most asteroids are found between Jupiter and Mars: the asteroid belt
   ▪ pulsar a type of star that is far away in space and produces radiation and RADIO WAVES
   ▪ quasar an object like a star that is far away in space and shines extremely brightly
   ▪ supernova a very large exploding star
   ▪ constellation a group of stars that forms a particular pattern and has a name: The constellation of Orion is one of the most easily recognizable patterns of stars in the night sky.
   ▪ galaxy one of the large groups of stars that make up the universe: Astronomers have detected a galaxy 11 billion light years away.
   ▪ the universe all space, including all the stars and planets: How many planets in the universe have life?

qua·sarBrE /ˈkweɪzɑː(r)/ 🔊NAmE /ˈkweɪzɑːr/ 🔊 noun (astronomy 天文学) a large object like a star, that is far away and that shines very brightly and occasionally sends out strong radio signals 类星体  ➡  compare pulsar