The geography of the heavens and classbook of astronomy; (1863)
Burritt, Elijah H. (Elijah Hinsdale), 1794-1838, Mattison, Hiram, 1811-1868, Whitall, Henry, 1819-1887? Celestial planisphere. [from old catalog] · New York, Mason brothers; Boston, Mason & Hamlin; [etc., etc.] · leaf 266
ndred thousand times larger than the Earth,being much less dense, contains a quantity of matter only355,000 as great, and hence attracts the Earth with a force only355,000 times greater than that with which the Earth attractsthe Sun. The quantity of matter in the Sun is 780 times greater than that… … 560. The Center of Gravity of a body, is that point in whichits whole weight is concentrated, and upon which it would rest,if freely suspended. If two weights, one of ten pounds, theother of one pound, be connected together by a rod eleven feetlong, nicely poised on a center, and then be thrown…
Constellations · Stars
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