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Page vi
... SOLAR SYSTEM II . HISTORY OF THE TELescope - SpeCTROSCOPE Book IV . THE PHYSICAL PERIOD 12. THE SUN · PAGE 73 86 3 94 13. THE MOON AND PLANETS - 14. COMETS AND METEORS 107 120 15. THE STARS AND NEBULÆ - n 125 INDEX 147 PREFACE An ...
... SOLAR SYSTEM II . HISTORY OF THE TELescope - SpeCTROSCOPE Book IV . THE PHYSICAL PERIOD 12. THE SUN · PAGE 73 86 3 94 13. THE MOON AND PLANETS - 14. COMETS AND METEORS 107 120 15. THE STARS AND NEBULÆ - n 125 INDEX 147 PREFACE An ...
Page vii
... the progress of astro- nomical discovery , and , by recognising the different points of view of the different ages , to give due credit even to the ancients . No one can expect , in a history of astronomy of limited size , to find a ...
... the progress of astro- nomical discovery , and , by recognising the different points of view of the different ages , to give due credit even to the ancients . No one can expect , in a history of astronomy of limited size , to find a ...
Page 5
... the period during which 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 ...
... the period during which 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 ...
Page 7
George Forbes. last be seen to rise at sunset . The grouping of the stars into constellations and recording their places was a useful observation . The theoretical prediction of eclipses of the sun and moon , and of the motions of the ...
George Forbes. last be seen to rise at sunset . The grouping of the stars into constellations and recording their places was a useful observation . The theoretical prediction of eclipses of the sun and moon , and of the motions of the ...
Page 23
George Forbes. It did not occur to Ptolemy to place the centres of the epicycles of 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 ...
George Forbes. It did not occur to Ptolemy to place the centres of the epicycles of 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 ...
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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