History of Astronomy |
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... for the secular acceleration of the moon's longitude and the node of her orbitthanany that could be obtained from modern observationsmade with instruments of the highest precision. So again, Mr. Hind [3] was enabled to trace back.
... for the secular acceleration of the moon's longitude and the node of her orbitthanany that could be obtained from modern observationsmade with instruments of the highest precision. So again, Mr. Hind [3] was enabled to trace back.
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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 stars are shining as brightly in the blue ...
... 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 stars are shining as brightly in the blue ...
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... the moon was in conjunction with the otherfour planets. Butthis needs confirmation. Yao, referredto above, gaveinstructions to his astronomersto determine the positionsofthe solsticesand equinoxes, and they reported the names of the stars ...
... the moon was in conjunction with the otherfour planets. Butthis needs confirmation. Yao, referredto above, gaveinstructions to his astronomersto determine the positionsofthe solsticesand equinoxes, and they reported the names of the stars ...
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... the moon's orbit revolves justonce round the poleofthe ecliptic,and for this reason the eclipses in one cycleare repeated with very slightmodification in the next cycle,and so on for many centuries. It maybethat theneglect of their ...
... the moon's orbit revolves justonce round the poleofthe ecliptic,and for this reason the eclipses in one cycleare repeated with very slightmodification in the next cycle,and so on for many centuries. It maybethat theneglect of their ...
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... the moon, and themoon was eclipsed." The Phoenicians aresupposed to haveusedthestarsfor navigation, but therearenorecords. TheEgyptianpriests tried tokeep suchastronomical knowledge asthey possessed to themselves. It isprobable thatthey ...
... the moon, and themoon was eclipsed." The Phoenicians aresupposed to haveusedthestarsfor navigation, but therearenorecords. TheEgyptianpriests tried tokeep suchastronomical knowledge asthey possessed to themselves. It isprobable thatthey ...
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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