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Longman Dictionary of Contemporary English

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quasar

Related topics: Astronomy

qua·sar /ˈkweɪzɑː $ -ɑːr/ noun [countableC]

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

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