A Fourteen Weeks Course in Descriptive Astronomy |
From inside the book
Results 1-5 of 25
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 will 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 . 888 83.
... , but never exceeds 30 ° . * If we watch it closely , we will 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 . 888 83.
Page 85
... overtake us . DISTANCE FROM THE EARTH . - This varies still more than its sun distance . At inferior conjunction it is between the earth and the sun , and its mean dis- tance from us is the difference between the distance of MERCURY . 85.
... overtake us . DISTANCE FROM THE EARTH . - This varies still more than its sun distance . At inferior conjunction it is between the earth and the sun , and its mean 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 ...
Other editions - View all
Common terms and phrases
angle aphelion appear astronomer atmosphere attraction axis beautiful bright brilliant called Capricornus Celestial Sphere centre circle color comet conjunction constellation Cor Caroli dark Davies diameter disk double star earth ecliptic equal equator equinoctial figure fixed stars full moon globe heat heavenly bodies heavens Herschel horizon inclined inferior inferior conjunction inferior planet Jupiter latitude length light longitude luminous lunar magnitude Mars mean distance measured Mercury meridian meteors miles moon moon's motion move Mythological naked eye nearer nearly nebula Neptune night node north pole observer opposite orbit parallax pass path penumbra perigee perihelion planet polar portion position rays represented revolution revolve Right Ascension ring rotation Saturn seasons seen shadow shine side sidereal solar system southern space spots summer sun's superior planets supposed surface tance telescope theory tion Uranus varies velocity Venus vernal equinox visible zodiac