Elementary astronomy; a beginner's text-book (1899)
Holden, Edward Singleton, 1846-1914 · New York, H. Holt and company · leaf 420
general milkiness or nebulosity. NEBULA AND CLUSTERS. 395 In 1791, however, he discovered a nebulous star (properly so called)—that is, a star which was undoubtedly similar to the surroundingstars, and which was encompassed by a halo of nebulous light. Hisreasoning on this discovery is instructive.… … Fig. 205.—Spfral Nebttla. or the envelope is composed of stars indefinitely small ; or, second,we must admit that the star is involved in a shining fluid of a naturetotally unknown to us. The shining fluid might exist independently of stars. The lightof this fluid is no kind of reflection from the…
Astronomy
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