History of Astronomy |
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Page 67
... miles . On March 28th , 1802 , Olbers discovered a new seventh magnitude star , which turned out to be a planet resembling Ceres . It was called Pallas . Gauss found its orbit to be inclined 35 ° to the ecliptic , and to cut the orbit ...
... miles . On March 28th , 1802 , Olbers discovered a new seventh magnitude star , which turned out to be a planet resembling Ceres . It was called Pallas . Gauss found its orbit to be inclined 35 ° to the ecliptic , and to cut the orbit ...
Page 78
... miles per second . 1681 he took up his duties as astronomer at Copenhagen , and built the first transit circle on a window - sill of his house . The iron axis was five feet long and one and a - half inches thick , and the telescope was ...
... miles per second . 1681 he took up his duties as astronomer at Copenhagen , and built the first transit circle on a window - sill of his house . The iron axis was five feet long and one and a - half inches thick , and the telescope was ...
Page 84
... distance 93,080,000 miles . He considered that , while the superiority of the heliometer had been proved , the results would be still better with the points of light shown by minor planets rather than with the disc of 84 OBSERVATION.
... distance 93,080,000 miles . He considered that , while the superiority of the heliometer had been proved , the results would be still better with the points of light shown by minor planets rather than with the disc of 84 OBSERVATION.
Page 85
... miles a second ; whence the distance to the sun is 92,780,000 miles . There seems , however , to be some uncertainty about the true value of the aberration , any determination of which is subject to irregularities due to the " seasonal ...
... miles a second ; whence the distance to the sun is 92,780,000 miles . There seems , however , to be some uncertainty about the true value of the aberration , any determination of which is subject to irregularities due to the " seasonal ...
Page 86
... miles at rare intervals , and , with the aid of photography , will certainly give us the best result . A large number of observatories combined to observe the opposition of 1900. Their results are not yet com- pletely reduced , but the ...
... miles at rare intervals , and , with the aid of photography , will certainly give us the best result . A large number of observatories combined to observe the opposition of 1900. Their results are not yet com- pletely reduced , but the ...
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accepted accurate ancient appear astronomers attraction bodies bright calculations called catalogue cause centre century Chinese circle comet compared complete Copernicus determined diameter direction discovered discovery distance earth eclipse effect elements enabled epicycles equal error explain fact fixed follow force four Galileo gave give given gravitation heavens held Herschel increased interesting Jupiter Kepler knowledge known later LIBRARIES light lunar Mars mass mathematical mean measured method miles moon moon's motion move Newton noticed object observations Observatory opposition orbit original parallax pass period photographic physical planet planetary pole position predicted progress proper motion proved records researches revolve ring rotation round Royal satellites seems seen showed SIGILLUM solar system spectroscope spectrum stars studied sun's supposed surface tables telescope theory tion trace true Tycho Brahe UNIVERSITY VERITAS