Newcomb, Simon, 1835-1909, Holden, Edward Singleton, 1846-1914, joint author · New York : H. Holt and company · leaf 417
anets. When]SrEwro>^ investigated themathematical results of the theory of gravitation, he foundthat a body moving under the attraction of the sun mightdescribe either of the three conic sections, the ellipse, par-abola, or hyperbola. Bodies moving in an ellipse, as thoplanets, would complete… … Fia. 106.—ELI^IPTIC AND PARABOLIC ORBITS. to infinity. It was, therefore, very natural to concludethat comets might be bodies which resemble the planets inmoving under the suns attraction, but which, instead ofdescribing an ellipse in regular periods, like the planets,move in parabolic or…
Astronomy
Internet Archive · Cornell University Library · Public Domain Mark 1.0. Free to use for anything.
