| 单词 | local cluster |
| 释义 | > as lemmaslocal cluster local cluster n. Astronomy (a) a nearby cluster of stars; spec. one within the galaxy to which the sun belongs (now rare); (b) = local group n. (b). ΘΚΠ the world > the universe > constellation > star-cluster > [noun] > local local cluster1898 local group1912 the world > the universe > constellation > galaxy > [noun] > cluster of galaxies > local local cluster1898 local group1912 supergalaxy1916 1898 Sunday Oregonian (Portland, Oregon) 29 May 8/1 The 6000 or 7000 stars around us seen by the naked eye are scattered in space with a near approach to uniformity, the only exception being local clusters, the component stars of which are few in number and pretty widely separated. 1918 H. Shapley in Proc. National Acad. Sci. U.S.A. 4 228 To test further for the existence of a limited local cluster..an investigation has been made of the galactic arrangement of the brighter stars. 1938 W. M. Smart Stellar Dynamics i. 2 There is some evidence that the stars in the neighbourhood of the sun form a loose cluster—known as the local cluster. 1971 New Scientist 29 July 245/1 The Supergalaxy is, in turn, composed of smaller clusters of galaxies, including the local cluster of about a dozen members, our Galaxy being one of them. 2012 J. Al-Khalili Paradox iii. 56 What Hubble had been observing was very distant galaxies moving away from us, rather than movement among those that make up our local cluster. < as lemmas |
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