Olmsted, Denison, 1791-1859. [from old catalog] · New York, R. B. Collins · leaf 199
ing about the timethe sun sets, surprises us by his magnitude and splendor;but when he passes to the other side of the sun to hissuperior conjunction, he dwindles to the appearance ofa small star, being then 237,000,000 miles from us. Thus,let M (Fig. 42) represent Mars in opposition, and Min the… … MARS. 185 235. Mars is the only one of the superior planetswhich exhibits phases. When he is towards the quad-ratures at Q or Q, it is evident from the figure thatonly a part of the circle of illumination is turned towardsthe earth, such a portion of the remoter part of it beingconcealed from our…
Astronomy
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