History of Astronomy |
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Page 5
... Halley's comet has been a member of the solar system , and to identify it in the Chinese observations of comets as far back as 12 B.C. Cowell and Cromellin extended the date to 240 B.C. In the same way the comet 1861.i. has been traced ...
... Halley's comet has been a member of the solar system , and to identify it in the Chinese observations of comets as far back as 12 B.C. Cowell and Cromellin extended the date to 240 B.C. In the same way the comet 1861.i. has been traced ...
Page 63
... Halley's suggestion became an inspiration for the mathematical astronomer . Clairaut , assisted by Lalande , found that Saturn would retard the comet 100 days , Jupiter 518 days , and predicted its return to perihelion on April 13th ...
... Halley's suggestion became an inspiration for the mathematical astronomer . Clairaut , assisted by Lalande , found that Saturn would retard the comet 100 days , Jupiter 518 days , and predicted its return to perihelion on April 13th ...
Page 64
... Halley's comet reappeared in 1835 , Pontecou- lant's computations for the date of perihelion passage were very exact ... comet , going back to II B.C. , and most of these have been identified as being really Halley's comet by the ...
... Halley's comet reappeared in 1835 , Pontecou- lant's computations for the date of perihelion passage were very exact ... comet , going back to II B.C. , and most of these have been identified as being really Halley's comet by the ...
Page 122
... Halley's comet remained the only one of which a pre- diction of the return had been confirmed , until the orbit of the small , ill - defined comet found by Pons in 1819 was computed by Encke , and found to have a period of 33 years . It ...
... Halley's comet remained the only one of which a pre- diction of the return had been confirmed , until the orbit of the small , ill - defined comet found by Pons in 1819 was computed by Encke , and found to have a period of 33 years . It ...
Page 125
... comet 1866 - Schiaparelli having independently attained both of these results . Subsequently Weiss , of Vienna ... Halley's comet since November , 1907 , although its perihelion passage will not take place until April , 1910 . 15. The ...
... comet 1866 - Schiaparelli having independently attained both of these results . Subsequently Weiss , of Vienna ... Halley's comet since November , 1907 , although its perihelion passage will not take place until April , 1910 . 15. The ...
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accepted accurate ancient appear astronomers attraction bodies bright calculations called catalogue cause centre century Chinese circle comet compared complete Copernicus determined diameter direction discovered discovery distance earth eclipse effect elements enabled epicycles equal error explain fact fixed follow force four Galileo gave give given gravitation heavens held Herschel increased interesting Jupiter Kepler knowledge known later LIBRARIES light lunar Mars mass mathematical mean measured method miles moon moon's motion move Newton noticed object observations Observatory opposition orbit original parallax pass period photographic physical planet planetary pole position predicted progress proper motion proved records researches revolve ring rotation round Royal satellites seems seen showed SIGILLUM solar system spectroscope spectrum stars studied sun's supposed surface tables telescope theory tion trace true Tycho Brahe UNIVERSITY VERITAS