Sharpless, Isaac, 1848-1920, Philips, G. M. (George Morris), 1851-1920, joint author · Philadelphia, J.B. Lippincott company · leaf 42
—The Comparative Sizes of the Sun, as seen.. from the Different Planets. motion slower and slower, until between P4 and P5 it is slowest of all. Ifthis were not the case, the suns attraction upon it herewould be too weak to hold it in its place, and it wouldfly off into space. As it turns and… … 38 ASTRONOMY. II. The radius-vector of each planet sweeps over equal areasin equal times. The radius-vector is the line drawn from the sun toany point of the orbit, as SP, SP1, SP2, etc., in Fig. 8. / we
Astronomy
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