Fourteen Weeks in Descriptive Astronomy |
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Page 27
... Mars in its course . But very soon there was as great discrepancy between the observed and computed places as before . Undismayed by this failure , Kepler assumed another hypothesis . He determined to place the sun at one of the foci of ...
... Mars in its course . But very soon there was as great discrepancy between the observed and computed places as before . Undismayed by this failure , Kepler assumed another hypothesis . He determined to place the sun at one of the foci of ...
Page 29
... Mars ' period , as the cube of Jupiter's distance is to the cube of Mars ' distance ; or , representing the earth's time of revolu- tion by P , and her distance from the sun by p , then letting D and d represent the same in another ...
... Mars ' period , as the cube of Jupiter's distance is to the cube of Mars ' distance ; or , representing the earth's time of revolu- tion by P , and her distance from the sun by p , then letting D and d represent the same in another ...
Page 31
... Mars and Saturn ; two luminaries , the Sun and Moon ; and Mercury alone , undecided and indifferent . From which , and from many other phenomena of Nature , such as the seven metals , etc. , we gather that the number of planets is ...
... Mars and Saturn ; two luminaries , the Sun and Moon ; and Mercury alone , undecided and indifferent . From which , and from many other phenomena of Nature , such as the seven metals , etc. , we gather that the number of planets is ...
Page 45
... Mars , Jupiter , Saturn , Uranus , Neptune . 3. The minor planets , at present one hundred and seventeen in number . ( The paths of some extend a little outside the Zodiac . ) 4. The satellites or moons , eighteen in number , which re ...
... Mars , Jupiter , Saturn , Uranus , Neptune . 3. The minor planets , at present one hundred and seventeen in number . ( The paths of some extend a little outside the Zodiac . ) 4. The satellites or moons , eighteen in number , which re ...
Page 66
... Mars or Jupiter . CHARACTERISTICS COMMON TO THE PLANETS . ( Hind . ) -1 . They move in the same invariable direction around the sun ; their course , as viewed from the north side of the ecliptic , being contrary to the motion of the ...
... Mars or Jupiter . CHARACTERISTICS COMMON TO THE PLANETS . ( Hind . ) -1 . They move in the same invariable direction around the sun ; their course , as viewed from the north side of the ecliptic , being contrary to the motion of the ...
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Common terms and phrases
ancients Andromeda angle aphelion appear Aries astronomers atmosphere axis Boötes bright brilliant Canis Minor Capricornus Cassiopeia cause Celestial Sphere centre Cepheus circle color comet conjunction constellation Cor Caroli dark density Describe diameter disk earth east ecliptic equal equator equinoctial figure fixed stars full moon globe heat heavenly bodies heavens Hercules Herschel horizon inclined inferior conjunction inferior planet Jupiter latitude length light luminous lunar Lyra magnitude Mars mean distance Mercury meridian meteors miles moon's motion move naked eye nearly nebula Neptune night node north pole Orion parallax pass path penumbra perihelion Perseus Pisces polar Polaris precession rays revolve ring rising Saturn seasons seen shine side sidereal sidereal day solar day solar system solstice space spots summer sun's surface synodic revolution tance Taurus telescope theory tion Uranus Ursa Major Ursa Minor varies velocity Venus vernal equinox visible winter Zodiac