Electro astronomical atlas ... with explanatory notes, questions and answers (1874)
Spoor, J. W. (Joseph W.) · Albany, N.Y., Weed, Parsons and Company · leaf 115
ed bythat planet is but little more, at that enormousdistance, than the thousandth part of that receivedby us. But, as nothing is known of its physicaland atmospheric conditions or of its rotation,nothing can be determined on the climatic con-ditions of the planet. At a distance nearly equal to… … SATELLITE OF NEPTUNE. the mass of the primary. It is equal to about thel-17000th part of the mass of the Sun, or to 21times that of the Earth. Hence, the density ofthe matter of which Neptune consists is lessthan the fourth of that of the Earth, or nearlyequal to the density of nitric acid, and a…
Astronomy
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