A short course in astronomy and the use of the globes (1871)
Kiddle, Henry, 1824-1891 · New York, Chicago, Ivison, Blakeman, Taylor & co. · leaf 92
den-sity can be only about \ that of the earth, or a littlegreater than that of water. The force of gravity at thesurface of the planet is about 2^ times as great; so that a 125. For what is Jupiter remarkable ? Origin of its name ? Its sign ? 126. now-great is the eccentricity of its orbit ? Its… … COMPARATIVE MAGNITUDES OF THE EAETH ANDJCPITEE. body weighing one pound at the earths surface would weigh 2^ pounds at Jupiters. This body, so incon-ceivably vast, is flying inits orbit with the ve-locity of 28,700 miles anhour, or nearly 500 milesa minute—a speed sixtytimes as great as that ofa…
Astronomy
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