Elements of astronomy: accompanied with numerous illustrations, a colored representation of the solar, stellar, and nebular spectra, and celestial charts of the northern and the southern hemisphere (1875)
Lockyer, Norman, Sir, 1836-1920 · New York, D. Appleton and company · leaf 220
3 shows the effect of inclination inthe case of the rings of Saturn. The plane of the rings isinclined to the ecliptic, and the different positions of this opposition will be the most favorable for observation ? 381. When is the southernhemisphere of Mars best seen, and when the northern ? Why at… … Fig. 84.—Appearance op Saturn¥een the plane of its klngspasses through the earth. plane are always parallel.Twice in the planets yearthe plane of the rings mustpass through the Sun; andwhile the plane is sweepingacross the Earths orbit, theEarth, in consequence of itsrapid motion, may pass twoor…
Astronomy
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