Mattison, Hiram, 1811-1868 · New York, Huntington and Savage, Mason and Law · leaf 62
rcle.] 248. When is Venus Morning Star ? When she is west of the Sun, and rises before him. [She must be west of the Sun, of course, from her inferior to her superior conjunc-tion. See cut, page 50.] 249. When is she Evening Star? When she is east of the Sun, and remains above thehorizon after he… … [Let the student hold the book up south of him, and he will at once see why Venusis alternately Morning and Evening Star. Let the plane A B represent the sensible orvisible horizon, C D the apparent daily path of the Sun through the heavens, and Ethe Earth in her apparent position. The Sun is shown…
Astronomy
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