History of Astronomy |
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... that the inclination of the earth's equator to the plane ofher orbit (the obliquityof the ecliptic) has been diminishing slowly since prehistoric times; and this fact has been confirmed by Egyptian and Chineseobservations onthelength of ...
... that the inclination of the earth's equator to the plane ofher orbit (the obliquityof the ecliptic) has been diminishing slowly since prehistoric times; and this fact has been confirmed by Egyptian and Chineseobservations onthelength of ...
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... thatthe Emperor Chueni (2513B.C.) sawfive planets in conjunction the same day that the sun and moon were in conjunction. Thisis discussedby Father Martin (MSS. of De Lisle); alsoby M. Desvignolles (Mem. Acad. Berlin, vol. iii., p. 193) ...
... thatthe Emperor Chueni (2513B.C.) sawfive planets in conjunction the same day that the sun and moon were in conjunction. Thisis discussedby Father Martin (MSS. of De Lisle); alsoby M. Desvignolles (Mem. Acad. Berlin, vol. iii., p. 193) ...
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... that the succeeding records have not been availableto later scholars; but thefact remains that—althoughat long intervals observations were madeof eclipses,comets, and falling stars, andof the position of the solstices, and ofthe ...
... that the succeeding records have not been availableto later scholars; but thefact remains that—althoughat long intervals observations were madeof eclipses,comets, and falling stars, andof the position of the solstices, and ofthe ...
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... thatthe starcharts were even then dividedinto constellations, which were known by the names which they bear to this day,and that the signs of the zodiac wereusedfor determining the coursesof the sun, moon, andofthe five planets Mercury ...
... thatthe starcharts were even then dividedinto constellations, which were known by the names which they bear to this day,and that the signs of the zodiac wereusedfor determining the coursesof the sun, moon, andofthe five planets Mercury ...
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... that the moonderives her light from thesun, andthat this fact explains her phases; thatan eclipse ofthe moon happens whenthe earth cutsoff the sun's lightfrom her.He supposed theearth tobeflat, and to floatupon water.He determined ...
... that the moonderives her light from thesun, andthat this fact explains her phases; thatan eclipse ofthe moon happens whenthe earth cutsoff the sun's lightfrom her.He supposed theearth tobeflat, and to floatupon water.He determined ...
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Airy allthe andthat andthe asthe Astronomer Royal Astronomia Nova astronomical units atmosphere atthe attraction axis bright bythe calculations catalogue centre century Chaldĉans Chinese comet confirmed Copernicus detected diameter discovered discovery distance earth eclipse epicycles equatoreal excentric explain fixed stars FOOTNOTES Frauenhofer fromthe Galileo Greenwich Halley havebeen heavenly bodies heavens heliometer Herschel Hipparchus Huggins hydrogen hypotheses inequality instruments inthe isthe John Herschel Jupiter Jupiter's Kepler lawof Lick Observatory light lines lunar Mars mathematical mean motion measured Mercury meteor miles moon moon's nebula Newton ofthese onthe orbit parallax perihelion period photographic physical planet planetary position predicted proper motion Ptolemy records reflector refractor retrograde retrograde motion revolve rotation round satellites Saturn seems solar system spectra spectroscope spectrum spots stellar sun's sunspot supposed surface telescope terrestrial thatthe theearth themoon theory thesame thesolar thesun tobe tothe Tycho Brahe Uranus velocity Venus Verrier William Herschel withthe zenith