History of Astronomy |
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Page 9
... 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 that on March 1st the ...
... 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 that on March 1st the ...
Page 12
... Mercury , Venus , Mars , 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 ...
... Mercury , Venus , Mars , 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 ...
Page 22
... Mercury and Venus to be on a bar passing through the sun , and to be between the earth and the sun . The centres of the epicycles of Mars , Jupiter , and Saturn were supposed to be further away than the sun . Mercury and Venus were ...
... Mercury and Venus to be on a bar passing through the sun , and to be between the earth and the sun . The centres of the epicycles of Mars , Jupiter , and Saturn were supposed to be further away than the sun . Mercury and Venus were ...
Page 23
... Mercury and Venus at the sun , and to extend the same system to the major planets . Some- thing of this sort had been proposed by the Egyptians ( we are told by Cicero and others ) , and was accepted by Tycho Brahe ; and was as true a ...
... Mercury and Venus at the sun , and to extend the same system to the major planets . Some- thing of this sort had been proposed by the Egyptians ( we are told by Cicero and others ) , and was accepted by Tycho Brahe ; and was as true a ...
Page 25
... Mercury and Venus to revolve round the sun , and to be carried with him in his annual motion round the earth . He noticed that the same supposition , if extended to Mars , Jupiter , and Saturn , would explain easily why they , and ...
... Mercury and Venus to revolve round the sun , and to be carried with him in his annual motion round the earth . He noticed that the same supposition , if extended to Mars , Jupiter , and Saturn , would explain easily why they , and ...
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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