History of Astronomy |
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Page 18
... distance from the fixed earth . He called this point the excentric . The line from the earth to the " excentric ... mean motion 18 THE GEOMETRICAL PERIOD.
... distance from the fixed earth . He called this point the excentric . The line from the earth to the " excentric ... mean motion 18 THE GEOMETRICAL PERIOD.
Page 41
... distances of the planets from the sun , which filled him with so much delight , was a display of pure fancy . His ... mean distance of the planet from the sun . E excellence of Copernicus's book helped to prolong the life of D 2 THE ...
... distances of the planets from the sun , which filled him with so much delight , was a display of pure fancy . His ... mean distance of the planet from the sun . E excellence of Copernicus's book helped to prolong the life of D 2 THE ...
Page 67
... mean distance from the sun was found to be 2.767 , agreeing with the 2.8 given by Bode's law . Its orbit was found to be inclined over 10 ° to the ecliptic , and its diameter was only 161 miles . On March 28th , 1802 , Olbers discovered ...
... mean distance from the sun was found to be 2.767 , agreeing with the 2.8 given by Bode's law . Its orbit was found to be inclined over 10 ° to the ecliptic , and its diameter was only 161 miles . On March 28th , 1802 , Olbers discovered ...
Page 69
... mean distance agreeing with Bode's law , he obtained a first approximation to the position of the supposed planet . He then asked Professor Challis , of Cambridge , to procure the latest observations of Uranus from Green- wich , which ...
... mean distance agreeing with Bode's law , he obtained a first approximation to the position of the supposed planet . He then asked Professor Challis , of Cambridge , to procure the latest observations of Uranus from Green- wich , which ...
Page 119
... distance . A group of four asteroids has lately been found , with a mean distance and period equal to that of Jupiter . To three of these masculine names have been given - Hector , Patroclus , Achilles ; the other has not yet been named ...
... distance . A group of four asteroids has lately been found , with a mean distance and period equal to that of Jupiter . To three of these masculine names have been given - Hector , Patroclus , Achilles ; the other has not yet been named ...
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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