Fourteen Weeks in Descriptive Astronomy |
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Page 31
... named from the seven planets . Now , if we increase the number of planets , this whole system falls to the ground . " NEWTON . - As we have seen , the truth of the Co- pernican system was fully established by the discov- eries of ...
... named from the seven planets . Now , if we increase the number of planets , this whole system falls to the ground . " NEWTON . - As we have seen , the truth of the Co- pernican system was fully established by the discov- eries of ...
Page 56
... . The spots have a motion of their own . - Besides the motion already named as assigned to the sun's rota- tion , the spots seem to have a motion of their own , and this fact is undoubtedly the cause of the va- 56 THE SOLAR SYSTEM .
... . The spots have a motion of their own . - Besides the motion already named as assigned to the sun's rota- tion , the spots seem to have a motion of their own , and this fact is undoubtedly the cause of the va- 56 THE SOLAR SYSTEM .
Page 123
... named , the sun was in both the sign and constellation Aries , at the time of the vernal equinox ; but since then the equinoxes have retrograded nearly a whole sign , so that now while the sun is in the sign Aries on the ecliptic , it ...
... named , the sun was in both the sign and constellation Aries , at the time of the vernal equinox ; but since then the equinoxes have retrograded nearly a whole sign , so that now while the sun is in the sign Aries on the ecliptic , it ...
Page 188
... named- 1. Mimas . 3. Tethys . 5. Rhea . 2. Enceladus . 4. Dione . 6. Titan . 7. Hyperion . 8. Iapetus . Iapetus is the largest of these , and in size exceeds Mars . Enceladus and Mimas are the faintest of twinklers , and can only be ...
... named- 1. Mimas . 3. Tethys . 5. Rhea . 2. Enceladus . 4. Dione . 6. Titan . 7. Hyperion . 8. Iapetus . Iapetus is the largest of these , and in size exceeds Mars . Enceladus and Mimas are the faintest of twinklers , and can only be ...
Page 228
... named from their supposed re- semblance to some figures , such as perching birds , pugnacious bulls , or contorted snakes , while others do honor to the memory of the classic heroes of an tiquity . " Thus monstrous forms , o'er heaven's ...
... named from their supposed re- semblance to some figures , such as perching birds , pugnacious bulls , or contorted snakes , while others do honor to the memory of the classic heroes of an tiquity . " Thus monstrous forms , o'er heaven's ...
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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