History of Astronomy |
From inside the book
Results 1-5 of 12
Page
... fixed on this vault; the moon, and later the planets, were seen to crawl over it. It was a great step to look on thevaultasa hollow spherecarrying thesun too.It must havebeen difficult tobelieve thatat midday the stars are shining as ...
... fixed on this vault; the moon, and later the planets, were seen to crawl over it. It was a great step to look on thevaultasa hollow spherecarrying thesun too.It must havebeen difficult tobelieve thatat midday the stars are shining as ...
Page
... fixed the date May 28th, 585 B.C. But other modern astronomers give different dates. ThaleswenttoEgypt tostudy ... stars arenotmere spotson theheavenly vault,but solids; that the moonderives her light from thesun, andthat this fact ...
... fixed the date May 28th, 585 B.C. But other modern astronomers give different dates. ThaleswenttoEgypt tostudy ... stars arenotmere spotson theheavenly vault,but solids; that the moonderives her light from thesun, andthat this fact ...
Page
... fixed stars to be on a vault of heaven; and the sun, moon, and planets to be upon similar vaults or spheres, twentysixrevolving spheres in all, the motion ofeach planetbeing resolved intoitscomponents, and a separate sphere being ...
... fixed stars to be on a vault of heaven; and the sun, moon, and planets to be upon similar vaults or spheres, twentysixrevolving spheres in all, the motion ofeach planetbeing resolved intoitscomponents, and a separate sphere being ...
Page
... fixed the positionsof the zodiacal stars, near to which all the planets intheir orbits pass, thus facilitating the determination of planetary motions. Aristarchus (320250B.C.) showedthat thesun must beat least nineteen times ...
... fixed the positionsof the zodiacal stars, near to which all the planets intheir orbits pass, thus facilitating the determination of planetary motions. Aristarchus (320250B.C.) showedthat thesun must beat least nineteen times ...
Page
... stars. If the star were known, this would give an approximate date. Up to ... fixed inthe centre of the universe. He adopted the excentric andequant of ... fixed andthesun to revolve round it onceayear, and the planets eachin its own ...
... stars. If the star were known, this would give an approximate date. Up to ... fixed inthe centre of the universe. He adopted the excentric andequant of ... fixed andthesun to revolve round it onceayear, and the planets eachin its own ...
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 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