Word: meteors
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Dates: during 1930-1939
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...plates of Leonid meteor spectra and one direct photograph of a leonid have been obtained to date from the observations made by members of the staff and students of the Harvard Observatory on the nights of Monday, Tuesday, and Thursday, November...
...well observed, he gives a preliminary value of 500 million years, which is probably a minimum value because of possible loss of helium in space and in our museums for over 60 years. The Pultusk meteorite was certainly of interstellar origin, and judging from preliminary results of the Arizona meteor expedition, we may expect that at least several of the iron meteorites investigated by Paneth also do not belong to the solar system...
...meteor which I observed was of the approximate brilliancy of Venus, greater than a first magnitude star. It did not belong to any one of the showers that the earth encounters in the round of its orbit, like the Leonids which illuminate the skies near the end of November or the Persoids which may be seen in great numbers during August...
...Meteors are of two types, the metallic and the stony. The stony, type rarely fall to earth but there are many examples of the metallic type which are often so large that they are not oxidized by the time they penetrate the earth's layer of atmosphere. The meteorite discovered by Admiral Peary on his North Pole Expedition in 1909 is of the metallic type, composed of 95 per cent iron and a small amount of nickel. The Tent. as it is called because of its peculiar shape, weighs over 36 tons. A celestial visitor almost twice as large...
Despite the fact that there is no authorized record of a man being killed by a meteor, such a shower bombarded the earth at a desolate spot in Siberia in 1909 that wild life has not yet returned. Within a radius of 300 miles from the point where the meteor struck trees were blown down by force of the air pressure. The fall was recorded as an earthquake disturbance on the seismograph at the University of Moscow and even on the Ferdham University instrument...