Identifier: scienceguide7692amer (find matches)
Title: Guide leaflet
Year: 1901 (1900s)
Authors: American Museum of Natural History
Subjects: American Museum of Natural History Natural history
Publisher: New York : The Museum
Contributing Library: American Museum of Natural History Library
Digitizing Sponsor: IMLS / LSTA / METRO

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AKTIST:? SKETCH OF METEOR FALLIXCi AT XRiHT. BY T. W . \OTEU Meteors pass through the atmosphere at speeds varying from eight to fifty miles \)ev second night than during the day for at nighttheir hght is apparently stronger. Comets are rarely conspicuous, for lessthan ten per cent of the several hundredthousand in the solar system can be seenwith the naked eye. They vary consider-ably in size, some of the smallest haveapproximately the diameter of the earth;while the Great Comet of 1811 exceededthe size of the sun and had a diameter offully 1,000.000 miles. The average sizeof many of them is 80,000 miles. Comets,which move in highly elliptical orbits ofgreat extent are, according to Keplerslaws, much more rapid in their motionwhen near the sun than when far away.Moreover, since most of them are illu-minated only during the short intervalwhen they are near the sun, they travelmost of the time in the cold reahns of spaceasdark objects or faintly luminous bodies. Comets usually have a b

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