Sharpless, Isaac, 1848-1920, Philips, G. M. (George Morris), 1851-1920, joint author · Philadelphia, J.B. Lippincott company · leaf 139
Fig. 30.—The Moos near the Last Quarter. (From Newcombs Popular Astronomy.) best time for evening observation of the moon is fromthe time it is new until it is half full. The inner edge 12 134 ASTRONOMY. of the crescent, separating the light and dark parts ofthe moon, called the terminator^ will be… … Fig. 31.—A Group of Lunar Mountains. jagged. This is caused by the rough mountainous sur-face of the moon. Near the terminator, round pits, re- THE MO OK 135 sembling pock-marks, will probably be seen : these arethe great crater mountains. It is their dark shadowsbeside them that make all these…
Astronomy
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