| 单词 | star stream |
| 释义 | > as lemmasstar stream star stream n. †(a) a narrow band of the sky or space that is rich in stars (obsolete); (b) Astronomy a large group of stars having similar proper motions; esp. each of two such groups with opposite directions of motion (cf. star streaming n.).In quot. 1844 denoting the constellation Eridanus, the River. ΘΚΠ the world > the universe > sky, heavens > [noun] > region, zone coastc1400 zone1795 star stream1844 lane1899 the world > the universe > star > stellar motion > [noun] proper motion1561 star drift1829 star stream1844 motus peculiaris1890 star streaming1905 drift1906 1844 J. Leitch tr. C. O. Müller Introd. Sci. Syst. Mythology ix. 138 There were many instances in which..the mythological name superseded the simple description of form, as e. g., the star-stream was converted into Eridanus [Ger. aus dem Sternenstrome ein Eridanos wurde]. 1894 Knowledge 1 June 133/1 The streams are in most cases accompanied by narrow black channels in the general nebulosity, which run parallel to and alongside of the star streams. 1904 J. C. Kapteyn in H. J. Rogers Congress Arts & Sci. (1906) IV. 418 Here we have a clear indication that we have to do with two star-streams. 1968 W. M. Smart Riddle of Universe vi. 106 Kapteyn's star-streams are consistent with the phenomenon of galactic rotation and are indeed explained by it. 2007 Sci. Amer. (U.K. ed.) Apr. 26/1 Probably the most impressive of the known star streams is the Sagittarius stream,..discovered in 1994. < as lemmas |
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