History of Astronomy |
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Page 9
... Jupiter , Saturn , and Mercury were all between the eleventh and eighteenth degrees of Pisces , all visible together in the evening on February 28th 2446 B.C. , while on the same day the sun and moon were in conjunction at 9 a.m. , and ...
... Jupiter , Saturn , and Mercury were all between the eleventh and eighteenth degrees of Pisces , all visible together in the evening on February 28th 2446 B.C. , while on the same day the sun and moon were in conjunction at 9 a.m. , and ...
Page 12
... Jupiter , and Saturn . We have records of observations carried on under Asshurbanapal , who sent astronomers to different parts to study celestial phenomena . Here is one : — To the Director of Observations , -My Lord , his humble ...
... Jupiter , and Saturn . We have records of observations carried on under Asshurbanapal , who sent astronomers to different parts to study celestial phenomena . Here is one : — To the Director of Observations , -My Lord , his humble ...
Page 22
... Jupiter , and Saturn were supposed to be further away than the sun . Mercury and Venus were supposed to revolve in their epicycles in their own periodic times and in the deferent round the earth in a year . The major planets were sup ...
... Jupiter , and Saturn were supposed to be further away than the sun . Mercury and Venus were supposed to revolve in their epicycles in their own periodic times and in the deferent round the earth in a year . The major planets were sup ...
Page 25
... Jupiter , and Saturn , would explain easily why they , and especially Mars , seem so much brighter in opposition . For Mars would then be a great deal nearer to the earth than at other times . It would also explain the retrograde motion ...
... Jupiter , and Saturn , would explain easily why they , and especially Mars , seem so much brighter in opposition . For Mars would then be a great deal nearer to the earth than at other times . It would also explain the retrograde motion ...
Page 48
... Jupiter accompanied by four moons ; Saturn with appendages that he could not explain , but unlike the other planets ; the Milky Way composed of a multitude of separate stars . His fame flew over Europe like magic , and his dis- coveries ...
... Jupiter accompanied by four moons ; Saturn with appendages that he could not explain , but unlike the other planets ; the Milky Way composed of a multitude of separate stars . His fame flew over Europe like magic , and his dis- coveries ...
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Common terms and phrases
accurate observations Airy astro Astronomer Royal Astronomia Nova astronomical units attraction axis bright calculations Cape Cassini catalogue centre century comet compute Copernicus diameter discovered discovery earth eclipse epicycles equatoreal error excentric explain fact fixed stars Galileo Greenwich Halley heavenly bodies heavens heliometer Hipparchus Huggins hydrogen hypothesis instruments Johann Kepler John Herschel Jupiter Jupiter's Kepler Laplace Lick Observatory light line of apses line of sight lunar Mars mathematical mean distance mean motion measured Mercury meteor method miles a second moon moon's nebulæ Newton Observatory orbit parallax perihelion period photographic physical planet planetary pole position predicted proper motion proved Ptolemy R. S. Phil records refractor retrograde retrograde motion revolution revolve round ring rotation round the sun satellites seems showed Sirius solar system spectra spectroscope spectrum spots stellar sun-spots sun's surface supposed tables telescope theory tion Trans Tycho Brahe Uranus velocity Venus Verrier zenith