Word: sky
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Dates: during 1890-1899
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During a break in the clouds of about half an hour on Tuesday night, two meteors were seen which were estimated to be Leonids, and on Wednesday night, after the clearing of the sky, between 50 and 60 meteors were observed of which about 30 were Leonids...
...about midnight, but on two occasions it has lasted from midnight until dawn. In 1799 and 1833 the shower of meteors was exceptionally fine, but in 1866 it was only ordinary. It will appear as if the meteors came from the direction of the constellation Leo, in the northeastern sky. The best showers will be on Tuesday and Wednesday evenings, and, if any are seen before midnight, a greater number may be expected later...
...race between Harvard, Yale and Cornell which was to have taken place this afternoon at 2.30 o'clock has been postponed until 12.30 tomorrow on account of unfavorable conditions. At two o'clock this afternoon it looked as if the race would certainly be rowed. There was a clear sky and light wind from the west. The observation train and big steamboats, crowded with spectators, moved up to the start. At the same time the Cornell crew put out from their quarters in the launch, and with the shell in tow started for Red Top, the quarters of the Harvard...
...portrait lens like that used by photographers, only larger. The field of view is in this way increased from two degrees square to ten degrees square, and a photograph is obtained of the spectra of all the brighter stars in this large region. Many thousand plates, covering the entire sky, have been taken in this way at the Cambridge and Arequipa stations of this observatory. As a result, numerous remarkable objects have been discovered. One of the latest is the spectrum of a meteor which has thus been photographed for the first time. Since it is impossible to foresee when...
...system used in discovering variable stars is very successful. There is in the observatory a library, so to speak, of the sky for the past eight years. During this time nearly 60,000 photographs of the skies at differet times have been taken. As soon as a star is noticed with hydrogen lines on its spectrum, a reference is immediately made to the photpraphs made in that region where the star is found. From these different photographs it can be learned whether the star is always of the same brightness. This method leads to the discovery of more variable stars...