History of Astronomy |
From inside the book
Results 6-10 of 29
Page
... moon, and stars arenotmere spotson theheavenly vault,but solids; 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 ...
... moon, and stars arenotmere spotson theheavenly vault,but solids; 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 ...
Page
... moon, and stars, while Heraclitus (540500 B.C.) supposed that the starswere lighted eachnightlike lamps, and the suneachmorning. Parmenides supposed the earthto be a sphere. Pythagoras(569470 B.C.) visited Egypt to study science. He ...
... moon, and stars, while Heraclitus (540500 B.C.) supposed that the starswere lighted eachnightlike lamps, and the suneachmorning. Parmenides supposed the earthto be a sphere. Pythagoras(569470 B.C.) visited Egypt to study science. He ...
Page
... moon occupy the same position relative tothe stars. It isstillused for fixingthe date of Easter, thenumber ofthe year in Melon'scycle being the golden number ofour prayerbooks. Melon's system divided the 235 lunations into months of ...
... moon occupy the same position relative tothe stars. It isstillused for fixingthe date of Easter, thenumber ofthe year in Melon'scycle being the golden number ofour prayerbooks. Melon's system divided the 235 lunations into months of ...
Page
... moon,which isfarshort of the mark. Healsofound the sun's diameter, correctly, to be half a degree. Eratosthenes (276196 B.C.) measured the inclination to the equator of the sun's apparent path inthe heavens—i.e.,he measured ...
... moon,which isfarshort of the mark. Healsofound the sun's diameter, correctly, to be half a degree. Eratosthenes (276196 B.C.) measured the inclination to the equator of the sun's apparent path inthe heavens—i.e.,he measured ...
Page
... moon's orbit and its inclination to the ecliptic. Themotion of thisplaneround the pole of the ecliptic oncein eighteen yearscomplicated the problem.He located the moon'sexcentric ashehaddone the sun's. He also discoveredsomeof theminor ...
... moon's orbit and its inclination to the ecliptic. Themotion of thisplaneround the pole of the ecliptic oncein eighteen yearscomplicated the problem.He located the moon'sexcentric ashehaddone the sun's. He also discoveredsomeof theminor ...
Other editions - View all
Common terms and phrases
Airy allthe andthat andthe asthe Astronomer Royal Astronomia Nova astronomical units atmosphere atthe attraction axis bright bythe calculations catalogue centre century Chaldæans 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