The heavens above: a popular handbook of astronomy (1882)
Gillet, J. A. (Joseph Anthony), 1837-1908 · New York, Chicago, Potter, Ainsworth, & Co. · leaf 259
Fig. 264. 237. The Apparent Size of Mars. — Owing to the vary-ing distance of Mars from the earth, the apparent size ofthe planet varies almost as much as that of Venus. Fig.264 shows the apparent size of Mars at its extreme andmean distances from the earth. The apparent diametervaries from about… … Fig. 265. 238. The Volume and Density of Mars. — Among thelarger planets Mars is next in size to Mercury. Its realdiameter is somewhat more than four thousand miles, andits bulk is about one-seventh of that of the earth. Its size,compared with that of the earth, is shown in Fig. 265. PLATE W.
Astronomy
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