History of Astronomy |
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... that the starswere lighted eachnightlike lamps, and the suneachmorning. Parmenides supposed the earthto be a sphere. Pythagoras(569470 B.C.) visited Egypt to study science. He deduced his system, in whichthe earthrevolvesin an orbit ...
... that the starswere lighted eachnightlike lamps, and the suneachmorning. Parmenides supposed the earthto be a sphere. Pythagoras(569470 B.C.) visited Egypt to study science. He deduced his system, in whichthe earthrevolvesin an orbit ...
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... that the flat earth floated on water. Anaxagoras thought that, being flat,itwould be buoyed up and supported on the ... thatthe inclinationof the flatearth to the ecliptic was due tothe greater weight ofthe southern partsowing to the ...
... that the flat earth floated on water. Anaxagoras thought that, being flat,itwould be buoyed up and supported on the ... thatthe inclinationof the flatearth to the ecliptic was due tothe greater weight ofthe southern partsowing to the ...
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... thatthe passage was madefor this purpose. On other groundsthe dateassigned to theGreat Pyramid is 2123 B.C. (2) ... that the Great Bear never set in thoselatitudes. Nowithas been found thattheprecession of the equinoxesexplains all these ...
... thatthe passage was madefor this purpose. On other groundsthe dateassigned to theGreat Pyramid is 2123 B.C. (2) ... that the Great Bear never set in thoselatitudes. Nowithas been found thattheprecession of the equinoxesexplains all these ...
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... that the earth is fixed inthe centre of the universe. He adopted the excentric andequant of Hipparchus to explain ... thatthe apparent motionofa planetisonly its motionrelative tothe earth. If, then,we suppose theearth fixed andthesun ...
... that the earth is fixed inthe centre of the universe. He adopted the excentric andequant of Hipparchus to explain ... thatthe apparent motionofa planetisonly its motionrelative tothe earth. If, then,we suppose theearth fixed andthesun ...
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... that the true position of Copernicuscanbe realised.He noticed thatNicetas and others hadascribed the apparent diurnal ... thatthe Egyptians hadsupposed Mercuryand Venus torevolve round thesun,and tobe carried withhiminhis annual motion ...
... that the true position of Copernicuscanbe realised.He noticed thatNicetas and others hadascribed the apparent diurnal ... thatthe Egyptians hadsupposed Mercuryand Venus torevolve round thesun,and tobe carried withhiminhis annual motion ...
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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