Fourteen Weeks in Descriptive Astronomy |
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Page 69
... varying from 500 to 600 feet . If space will permit , we may place a moderate - sized orange nearly one - quarter of a mile distant from the start- ing point to represent Jupiter ; a small orange two- fifths of a mile for Saturn ; a ...
... varying from 500 to 600 feet . If space will permit , we may place a moderate - sized orange nearly one - quarter of a mile distant from the start- ing point to represent Jupiter ; a small orange two- fifths of a mile for Saturn ; a ...
Page 83
... , but never exceeds 30 ° . * If we watch it closely , we shall find that it again ap- * This distance varies much , owing to the eccentricity of Mer cury's orbit . proaches the sun and becomes lost in his rays . MERCURY . 83 MERCURY.
... , but never exceeds 30 ° . * If we watch it closely , we shall find that it again ap- * This distance varies much , owing to the eccentricity of Mer cury's orbit . proaches the sun and becomes lost in his rays . MERCURY . 83 MERCURY.
Page 85
... DISTANCE FROM THE EARTH . - This varies still more than its distance from the sun . At inferior conjunc- tion it is between the earth and the sun , and its dis- tance from us is the difference between the distance of MERCURY . 85.
... DISTANCE FROM THE EARTH . - This varies still more than its distance from the sun . At inferior conjunc- tion it is between the earth and the sun , and its dis- tance from us is the difference between the distance of MERCURY . 85.
Page 86
... varies in the same proportion as the distances , or as three to one . The greatest and least distances vary ac- cording as either planet may happen to be in aphe- lion or perihelion . If at inferior conjunction Mer- cury is in aphelion ...
... varies in the same proportion as the distances , or as three to one . The greatest and least distances vary ac- cording as either planet may happen to be in aphe- lion or perihelion . If at inferior conjunction Mer- cury is in aphelion ...
Page 90
... varies but little , owing to the slight eccentricity of Venus's orbit . Arago relates that Bonaparte , upon repairing to the Luxem- bourg , when the Directory was about to give him a fête , was much surprised at seeing the multitude ...
... varies but little , owing to the slight eccentricity of Venus's orbit . Arago relates that Bonaparte , upon repairing to the Luxem- bourg , when the Directory was about to give him a fête , was much surprised at seeing the multitude ...
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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