Newcomb, Simon, 1835-1909, Holden, Edward Singleton, 1846-1914, joint author · New York, H. Holt · leaf 179
eavens. These points are called themoons nodes. The point at which she passes from thesouth to the north of the ecliptic is called the ascendingnode / that in which she passes from the north to thesouth is the descending node. To illustrate the motion ofthe moon near the node, the dotted line a a… … at the node. If wecontinue following hercourse in this way fora week, we should findthat she had movedabout 90°, and attainedher greatest north lati-tude at 5° from theecliptic. At the endof another week, weshould find that she-had returned to theecliptic and crossed itat her descending node.At the…
Astronomy
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