Fourteen Weeks in Descriptive Astronomy |
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Page 62
... known . We shall notice the various theories now adopted by different astronomers . WILSON'S THEORY . - This theory supposes that the sun is composed of a solid , dark globe , surrounded by three atmospheres . The first , nearest the ...
... known . We shall notice the various theories now adopted by different astronomers . WILSON'S THEORY . - This theory supposes that the sun is composed of a solid , dark globe , surrounded by three atmospheres . The first , nearest the ...
Page 70
... known . Extending this scheme , we should find that the aphelion distance of Encke's comet would Fig . 16 . ATUR MERCURY VENUS CARTH NEPTUNE URANUS be at 880 feet ; the aphelion distance of Donati's comet of 1858 at 6 miles ; and the ...
... known . Extending this scheme , we should find that the aphelion distance of Encke's comet would Fig . 16 . ATUR MERCURY VENUS CARTH NEPTUNE URANUS be at 880 feet ; the aphelion distance of Donati's comet of 1858 at 6 miles ; and the ...
Page 83
... known planets . When the sky is very clear , we may sometimes see it , just after the setting of the sun , as a bright sparkling star , near the western horizon . Its elevation increases evening by evening , but never exceeds 30 ...
... known planets . When the sky is very clear , we may sometimes see it , just after the setting of the sun , as a bright sparkling star , near the western horizon . Its elevation increases evening by evening , but never exceeds 30 ...
Page 95
... loaded with vapors , which may mitigate the glare of the intense sunshine . SATELLITES . - Venus is not known to have any moon . THE EARTH . Sign ,, a circle with Equator and. CRESCENT AND SPOTS OF VENUS . THE EARTH IN SPACE . VENUS . 95.
... loaded with vapors , which may mitigate the glare of the intense sunshine . SATELLITES . - Venus is not known to have any moon . THE EARTH . Sign ,, a circle with Equator and. CRESCENT AND SPOTS OF VENUS . THE EARTH IN SPACE . VENUS . 95.
Page 98
... known fact , to re- call the arguments urged by the Spanish philosophers against the reasoning of Columbus , when he assured them that he could arrive at Asia just as certainly by sailing west as east . " How , " they asked , can the ...
... known fact , to re- call the arguments urged by the Spanish philosophers against the reasoning of Columbus , when he assured them that he could arrive at Asia just as certainly by sailing west as east . " How , " they asked , can the ...
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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