Moulton, Forest Ray, 1872-1952 · New York, The Macmillan company · leaf 255
g crater Coper-nicus is the Apennine range of mountains. The most con-spicuous features which are visible with an ordinary invert-ing telescope are shown on the map. Fig. 76. 135. The Mountains on the Moon.— There are tenranges of mountains on the part of the moon which is visible 208 AN… … Fig. 75. — The moon at 9| days. Photographed at the Yerkes Observatory. mountains on the earth were relatively as large, they wouldbe more than 15 miles high. The height of the lunar moun-tains is undoubtedly due, at least in part, to the low surface CH. VII, 135] THE MOON 209 gravity on the moon,…
Astronomy
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