| 单词 | gegenschein | 
| 释义 | gegenscheinn. Astronomy.   A patch of very faint nebulous light occurring in the ecliptic opposite the sun. Cf. counter-glow n. ΘΚΠ the world > the universe > luminous appearance > 			[noun]		 > gegenschein counter-glow1852 gegenschein1880 1880    Amer. Jrnl. Sci. 120 442  				The gegenschein is an extremely faint spot of light some 7° in diameter, lying in the zodiacal band. 1888    C. A. Young Text-bk. Gen. Astron. 347  				There is said to be in it [sc. the zodiacal light] at the point exactly opposite to the sun a patch a few degrees in diameter of slightly brighter luminosity, called the ‘Gegenschein’ or ‘counter-glow’. 1901    H. H. Turner Mod. Astron. 		(1902)	 iv. 269  				 1968    Observer 22 Dec. 3/1  				The astronauts..have a heavy programme of photography, including an attempt to photograph the ‘Gegenschein’, the image of the sun faintly reflected back from dust and tenuous gas in space. 1971    Nature 30 July 323/1  				Observations of the gegenschein are made best away from the Milky Way in February, March and April. This entry has not yet been fully updated (first published 1933; most recently modified version published online June 2021). <  | 
	
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