Lessons in Astronomy, Including Uranography; a Brief Introductory Course Without Mathematics
Lessons in Astronomy, Including Uranography; a Brief Introductory Course Without Mathematics
Charles a Charles Augustus Young
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In some cases this train remains visible for many minutes, — a fact not easily explained. It seems probable that the material must be phosphorescent. 319. Origin of Meteors. — They cannot be, as some have maintained, the immediate product of eruptions from vol- canoes, either terrestrial or lunar, since they reach our atmosphere with a velocity which makes it certain that 284 LESSONS IN ASTRONOMY they come to us from the depths of space. There is no proof that they have originated in any way di...fferent from the larger heavenly bodies. At the same time many of them resemble each other so closely as almost to compel the surmise that these, at least, must have had a common source. It is not perhaps impossible that such may be fragments which long ago were shot out from now extinct lunar volcanoes with a velocity which made planets of them for the time being. If so, they have since been traveling in independent orbits until they encountered the earth at the point where her orbit crosses theirs.
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