Elementary astronomy; a beginner's text-book (1899)
Holden, Edward Singleton, 1846-1914 · New York, H. Holt and company · leaf 337
in density, so that the conclusion that theEarth and Moon once formed one body is not contradictedby these facts. Gravity on the Moons surface is i as greatas at the Earths. Hence an explosion of subterraneansteam would form a much more extensive crater on theMoon than on the Earth, and mountains… … Fig. 177.— Lunar Landscape {Mare Grisium) from PhotographsTaken at the Lick Observatory. THE MOON. 317 in the case of the Earth. The albedo of the Moon is TVo;about that of weathered sandstone rocks.* The angle ofslope of the lunar volcanoes is about the same as the angleof terrestrial lavas. These…
Astronomy
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