Newcomb, Simon, 1835-1909 · New York, Harper & brothers · leaf 89
all round the celestial sphere, to cut the latter into two equal parts. Let us next examine more closely the relation of the earth to the sun. We have already shown that as the earth moves around the sun, the latter seems to move around the celestial sphere, and the circle in which he seems to move… … Fig. 18.— Causes of changes of seasons on the Copernican system. is inclined 23^° to that perpendicular, as shown in Fig. 18, which represents the annual course of the earth round the sun. It is of necessity drawn on a very incongruous scale, because the distance of the sun from the earth being…
Astronomy
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