Fourteen Weeks in Descriptive Astronomy |
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Page 76
... conjunction , as its light is then lost in the greater brilliancy of the sun . When in inferior conjunction , it sometimes passes in front. Fig . 19 . B ORBIT AND SEASONS OF MERCURY . VENUS AT ITS SOLSTICE. 76 THE SOLAR SYSTEM .
... conjunction , as its light is then lost in the greater brilliancy of the sun . When in inferior conjunction , it sometimes passes in front. Fig . 19 . B ORBIT AND SEASONS OF MERCURY . VENUS AT ITS SOLSTICE. 76 THE SOLAR SYSTEM .
Page 86
... SEASONS . AS Mercury's axis is much inclined from a perpendicular , its seasons are peculiar . There are no distinct frigid zones ; but large re- gions near the poles have six weeks continuous day and torrid heat , alternating with a ...
... SEASONS . AS Mercury's axis is much inclined from a perpendicular , its seasons are peculiar . There are no distinct frigid zones ; but large re- gions near the poles have six weeks continuous day and torrid heat , alternating with a ...
Page 87
... year , or eight times during the terrestrial one . An inhabitant of Mercury must be accustomed to the most sudden and vio- lent. ORBIT AND SEASONS OF MERCURY . VENUS AT ITS SOLSTICE . CRESCENT AND SPOTS OF VENUS. MERCURY . 87.
... year , or eight times during the terrestrial one . An inhabitant of Mercury must be accustomed to the most sudden and vio- lent. ORBIT AND SEASONS OF MERCURY . VENUS AT ITS SOLSTICE . CRESCENT AND SPOTS OF VENUS. MERCURY . 87.
Page 93
... SEASONS . As the axis of Venus is very much in- clined from a perpendicular , its seasons are similar to those of Mercury . The torrid and temperate Fig . 25 Plane of the rotation Axis of Planets orbit zones overlap each other ; the ...
... SEASONS . As the axis of Venus is very much in- clined from a perpendicular , its seasons are similar to those of Mercury . The torrid and temperate Fig . 25 Plane of the rotation Axis of Planets orbit zones overlap each other ; the ...
Page 94
... seasons . If the inclination of its axis is 75 ° , as some as- tronomers hold , its tropics must be 75 ° from the equator , and its polar circles 75 ° from the poles . The torrid zone is , therefore , 150 ° in width . The torrid and ...
... seasons . If the inclination of its axis is 75 ° , as some as- tronomers hold , its tropics must be 75 ° from the equator , and its polar circles 75 ° from the poles . The torrid zone is , therefore , 150 ° in width . The torrid and ...
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Common terms and phrases
ancients Andromeda angle aphelion appearance Aries astronomers atmosphere axis body Boötes bright brilliant Canis Minor Capricornus Cassiopeia celestial centre Cepheus circle color comet conjunction constellation Cor Caroli dark density Describe diameter disk Draco earth east ecliptic equal equator equinoctial figure fixed stars full moon globe heat heavens Hercules Herschel horizon inclined inferior inferior conjunction inferior planet Jupiter latitude length light lunar Lyra magnitude Mars mean distance Mercury meridian meteors miles moon moon's motion move naked eye nearly nebula Neptune node north pole orbit Orion parallax pass path penumbra perihelion Perseus Pisces planet Polaris precession rays revolve ring rising Saturn seasons seen shadow shines shower sidereal sidereal day solar day solar system space spots summer sun's superior planet surface synodic revolution tance Taurus telescope theory tion Uranus Ursa Major Ursa Minor varies velocity Venus vernal equinox visible zodiac