Fourteen Weeks in Descriptive Astronomy |
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Page 56
... ecliptic ( 7 ° 15 ' ) . 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 ...
... ecliptic ( 7 ° 15 ' ) . 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 ...
Page 66
... ecliptic , being contrary to the motion of the hands of a watch . 2. They describe oval or elliptical paths round the sun - not , however , differing greatly from circles . 3. Their orbits are more or less inclined to the ecliptic , and ...
... ecliptic , being contrary to the motion of the hands of a watch . 2. They describe oval or elliptical paths round the sun - not , however , differing greatly from circles . 3. Their orbits are more or less inclined to the ecliptic , and ...
Page 69
... ecliptic . Imagine a planet follow- ing the inclined ellipse ; at some point it must rise above the level of the fixed plane : this point is called the ascending node , and the opposite point of intersection is termed the descending ...
... ecliptic . Imagine a planet follow- ing the inclined ellipse ; at some point it must rise above the level of the fixed plane : this point is called the ascending node , and the opposite point of intersection is termed the descending ...
Page 77
... ecliptic , in Gemini ; but at D , it appears to us to be at G , in Taurus . So that the planet has retrograded through an entire sign on the ecliptic , while its course all the while has been directly for → ward in the order of the ...
... ecliptic , in Gemini ; but at D , it appears to us to be at G , in Taurus . So that the planet has retrograded through an entire sign on the ecliptic , while its course all the while has been directly for → ward in the order of the ...
Page 79
... ecliptic , in the sign Cancer ; but at G , it would appear to us at Q , in the sign Gemini , having apparently retrograded on the ecliptic the distance PQ , while it was all the while moving on in the direct order of the signs . Now ...
... ecliptic , in the sign Cancer ; but at G , it would appear to us at Q , in the sign Gemini , having apparently retrograded on the ecliptic the distance PQ , while it was all the while moving on in the direct order of the signs . Now ...
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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 cause 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 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 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 zone