| 单词 | massive black hole |
| 释义 | > as lemmasmassive black hole massive black hole n. Astronomy a black hole with a mass very much greater than the sun (typically 106 to 1010 times), believed to lie at the centre of some galaxies and to give rise to quasar phenomena. ΚΠ 1973 Astrophysical Jrnl. 181 l65 In the absence of a satisfactory theory one can try to account for the activity observed in galactic nuclei assuming the existence of massive black holes. 1989 J. Silk Big Bang (rev. ed.) xii. 269 Of the various theories of quasars, the massive black hole model appears to be the most plausible. 1995 K. Croswell Alchemy of Heavens xiv. 193 These stars have very high velocities, so the chance of seeing one..go behind the massive black hole is very large. < as lemmas |
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