单词 | quasi-stellar |
释义 | quasi-stellaradj. Astronomy. Of a celestial object: resembling a star optically (in that it gives an image that cannot be resolved) but believed not to be a star. Chiefly in designations of objects now usually called quasars, as quasi-stellar object, quasi-stellar radio source (cf. quasar n.). ΘΚΠ the world > the universe > star > kind of star > quasar > [adjective] quasi-stellar1963 1963 Sci. Amer. Dec. 54/1 In recognition of their small size, and for lack of a better name, they are called quasi-stellar radio sources. 1964 New Scientist 28 May 532/1 The highly enigmatic ‘quasi-stellar objects’ whose discovery over the past year or so has been of considerable excitement to astronomers. 1978 J. M. Pasachoff & M. L. Kutner University Astron. xxviii. 713 Sources in this new class resembled the quasi-stellar radio sources in being quasi-stellar and in having large redshifts but did not emit any detectable radio radiation. These were called quasi-stellar objects (QSO's). 1988 J. A. Wheeler in J. D. Barrow & F. J. Tipler Anthropic Cosmol. Princ. (rev. ed.) p. vii Telescopes bring light from distant quasi-stellar sources that lived billions of years before life on Earth, before there even was an Earth. 2005 FHM Jan. 188/1 First discovered..in the Sixties, quasars—or quasi-stellar radio sources—are the powerhouses of the universe. This entry has been updated (OED Third Edition, December 2007; most recently modified version published online March 2022). < adj.1963 |
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