History of Astronomy |
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... the progress of thought andknowledge which it is the objectofthis History to describe. The progress of human knowledge is measured by the increased habitof looking atfactsfrom new points of view, as muchasbythe accumulation of facts. The ...
... the progress of thought andknowledge which it is the objectofthis History to describe. The progress of human knowledge is measured by the increased habitof looking atfactsfrom new points of view, as muchasbythe accumulation of facts. The ...
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... the solar system, and to identify it in the Chinese observations of comets asfar back as 12 B.C. Cowelland Cromellin extended the dateto 240B.C.In thesame way the comet 1861.i. has been traced back in the Chinese records to 617 A.D. [4] ...
... the solar system, and to identify it in the Chinese observations of comets asfar back as 12 B.C. Cowelland Cromellin extended the dateto 240B.C.In thesame way the comet 1861.i. has been traced back in the Chinese records to 617 A.D. [4] ...
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... the moon, and later the planets, were seen to crawl over it. It was a great step to look on thevaultasa hollow spherecarrying thesun too.It must havebeen difficult tobelieve thatat midday ... The only object to be attained by comparing the.
... the moon, and later the planets, were seen to crawl over it. It was a great step to look on thevaultasa hollow spherecarrying thesun too.It must havebeen difficult tobelieve thatat midday ... The only object to be attained by comparing the.
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Airy allthe andthat andthe asthe Astronomer Royal Astronomia Nova astronomical units atmosphere atthe attraction axis bright bythe calculations catalogue centre century Chaldæans Chinese comet confirmed Copernicus detected diameter discovered discovery distance earth eclipse epicycles equatoreal excentric explain fixed stars FOOTNOTES Frauenhofer fromthe Galileo Greenwich Halley havebeen heavenly bodies heavens heliometer Herschel Hipparchus Huggins hydrogen hypotheses inequality instruments inthe isthe John Herschel Jupiter Jupiter's Kepler lawof Lick Observatory light lines lunar Mars mathematical mean motion measured Mercury meteor miles moon moon's nebula Newton ofthese onthe orbit parallax perihelion period photographic physical planet planetary position predicted proper motion Ptolemy records reflector refractor retrograde retrograde motion revolve rotation round satellites Saturn seems solar system spectra spectroscope spectrum spots stellar sun's sunÂspot supposed surface telescope terrestrial thatthe theearth themoon theory thesame thesolar thesun tobe tothe Tycho Brahe Uranus velocity Venus Verrier William Herschel withthe zenith