History of Astronomy |
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... the sun, moon, andofthe five planets Mercury, Venus, Mars, Jupiter, and Saturn. We have records of observations carried on under Asshurbanapal, who sent astronomers todifferent parts to study celestial phenomena. Here is one:— To ...
... the sun, moon, andofthe five planets Mercury, Venus, Mars, Jupiter, and Saturn. We have records of observations carried on under Asshurbanapal, who sent astronomers todifferent parts to study celestial phenomena. Here is one:— To ...
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... the sun's lightfrom her.He supposed theearth tobeflat, and to floatupon water.He determined theratio ofthe sun's diameter toits orbit,and apparently made out the diameter correctly as half a degree. He left nothingin writing. His ...
... the sun's lightfrom her.He supposed theearth tobeflat, and to floatupon water.He determined theratio ofthe sun's diameter toits orbit,and apparently made out the diameter correctly as half a degree. He left nothingin writing. His ...
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... the sun, moon, and stars, while Heraclitus (540500 B.C.) supposed that the starswere lighted eachnightlike lamps, and the suneachmorning. Parmenides supposed the earthto be a sphere. Pythagoras(569470 B.C.) visited Egypt to study ...
... the sun, moon, and stars, while Heraclitus (540500 B.C.) supposed that the starswere lighted eachnightlike lamps, and the suneachmorning. Parmenides supposed the earthto be a sphere. Pythagoras(569470 B.C.) visited Egypt to study ...
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... the sun and moon occupy the same position relative tothe stars. It isstillused for fixingthe date of Easter, thenumber ofthe year in Melon'scycle being the golden number ofour prayerbooks. Melon's system divided the 235 lunations into ...
... the sun and moon occupy the same position relative tothe stars. It isstillused for fixingthe date of Easter, thenumber ofthe year in Melon'scycle being the golden number ofour prayerbooks. Melon's system divided the 235 lunations into ...
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... the sun's diameter, correctly, to be half a degree. Eratosthenes (276196 B.C.) measured the inclination to the equator of the sun's apparent path inthe heavens—i.e.,he measured theobliquityof the ecliptic, making it23°51', confirming ...
... the sun's diameter, correctly, to be half a degree. Eratosthenes (276196 B.C.) measured the inclination to the equator of the sun's apparent path inthe heavens—i.e.,he measured theobliquityof the ecliptic, making it23°51', confirming ...
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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 sunspot supposed surface telescope terrestrial thatthe theearth themoon theory thesame thesolar thesun tobe tothe Tycho Brahe Uranus velocity Venus Verrier William Herschel withthe zenith