A new manual of the elements of astronomy, descriptive and mathematical .. (1868)
Kiddle, Henry, 1824-1891 · New York, Ivison, Phinney, Blakeman & co.; Chicago, S.C. Griggs & co. · leaf 275
ntimes the distance of Neptune from the sun. 376. Irregular Nebula are such as have no symmetryof form and scarcely any distinctness of outline, and are alsoremarkable for the diversity of brightness which they exhibitat different parts. a. Arago remarks of these diffuse masses of nebulous matter,… … CRAB NEBULA IN TAURUS.—Lord RodSe. Questions.—376. What are irregular nebulae? a. Their general appearance? NEBULA. 271 1. The Crab Nebula in Taurus (Fig. 127).—This singular object hasan elliptic outline in ordinary telescopes, but in Lord Rosses greatreflector it presents an appearance which has…
Astronomy
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