History of Astronomy |
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... axis, butto havenoorbital motion. The short epitome so far givenillustrates the extraordinarydeductive methodsadopted bytheancient Greeks. But they wentmuch fartherin the same direction. They seemto have beeningreat difficultyto explain ...
... axis, butto havenoorbital motion. The short epitome so far givenillustrates the extraordinarydeductive methodsadopted bytheancient Greeks. But they wentmuch fartherin the same direction. They seemto have beeningreat difficultyto explain ...
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... axis, in the oppositedirection tothe apparent motion ofthe stars. Also in thewritings of MartianusCapella he learnt thatthe Egyptians hadsupposed Mercuryand Venus torevolve round thesun,and tobe carried withhiminhis annual motion ...
... axis, in the oppositedirection tothe apparent motion ofthe stars. Also in thewritings of MartianusCapella he learnt thatthe Egyptians hadsupposed Mercuryand Venus torevolve round thesun,and tobe carried withhiminhis annual motion ...
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... axis aboutthe pole of theecliptic retrograde (i.e., opposite to the orbital revolution), and by making it performmore than one complete revolutionin ayear, the added partbeing 1/26000 of the whole, he was able to include the precession ...
... axis aboutthe pole of theecliptic retrograde (i.e., opposite to the orbital revolution), and by making it performmore than one complete revolutionin ayear, the added partbeing 1/26000 of the whole, he was able to include the precession ...
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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