Astronomy in a nutshell, the chief facts and principles explained in popular language for the general reader and for schools (1912)
Serviss, Garrett Putman, 1851-1929, Rouben Mamoulian Collection (Library of Congress) DLC · New York, London, G.P. Putnam's sons · leaf 238
ce of distance isthe eccentricity of the orbit. If an opposi-tion occurs when Mars is in aphelion its dis-tance from the earth will be about 61,000,000miles, but if the opposition occurs whenMars is in perihelion the distance will beonly about 35,000,000 miles. The averagedistance at an opposition… … Noy.ssjpn WSEPT.Z^igOQ. PERIHELION ^^s^o^r Fig. 16. Orbits of Mars and the Earth. Inspection shows at once why the oppositions of Marswhich occur in August and September are the mostfavourable because Mars being then near the perihelionpoint of its elongated orbit is comparatively near theearth,…
Astronomy
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