id author title date pages extension mime words sentences flesch summary cache txt 41606 Kirkwood, Daniel Comets and Meteors Their phenomena in all ages; their mutual relations; and the theory of their origin. .txt text/plain 20970 1501 74 years before our era, a large comet was observed not far from the sun. years, Halley announced this as the time of the comet's revolution, and comets per century[5] were observed during the same period. the remarkable fact that the orbits of the earth and comet intersect COMETS WHOSE ELEMENTS INDICATE PERIODICITY, BUT WHOSE RETURNS HAVE NOT periodic comets are near the orbits of the major planets. the two bodies will occur in 1985, when the form of the comet's orbit years, in an orbit somewhat more eccentric than that of Halley's comet. 4. That the orbits of some meteors and periodic comets have been The fact, then, that meteors move in the same orbits with comets is but great number of meteoric stones fell to the earth, generally penetrating discovery that comets and meteors are actually moving in the same orbits Neither the period of the meteors nor that of the comet can yet be ./cache/41606.txt ./txt/41606.txt