Flammarion, Camille, 1842-1925, Lockyer, Winifred James, Mrs., d. 1879 · New York, C. Scribner & co. · leaf 33
r of stars strongly condensed towards the 22 * Marvels of the Heavens. centre. This condensation is a manifest proof that the clusterof stars is not only circular, but also spherical. One instantof attention suffices indeed to show that if we look at a sphereof stars at a distance, the visual ray… … Fig. 2.—Cluster in the Centaur. visual ray gets nearer the centre its part comprised in thesphere wall become longer, and the number of stars which itwill meet goes on increasing. The maximum will be at thevery centre. It was this optical effect which induced thebelief in a condensation of nebulous…
Astronomy
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