Fourteen Weeks in Descriptive Astronomy |
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Page 15
... fixed stars , " although it is now known that they also are in motion - the most rapid of any known even to Astronomy - but through such immense or- bits that they seem to us stationary . Then , too , diagonally girdling the heavens ...
... fixed stars , " although it is now known that they also are in motion - the most rapid of any known even to Astronomy - but through such immense or- bits that they seem to us stationary . Then , too , diagonally girdling the heavens ...
Page 20
... fixed centre around which the sun and the heavenly bodies move . They then conceived that a bar , or some- thing equivalent , is connected at one end with the earth ; that at some part of this bar the sun is at- tached ; while between ...
... fixed centre around which the sun and the heavenly bodies move . They then conceived that a bar , or some- thing equivalent , is connected at one end with the earth ; that at some part of this bar the sun is at- tached ; while between ...
Page 36
... fixed stars in the same place . This sphere of stars sur- rounds the earth on every side . In the daytime we cannot see the stars because of the superior light of the sun ; but with a telescope they can be traced , and an astronomer ...
... fixed stars in the same place . This sphere of stars sur- rounds the earth on every side . In the daytime we cannot see the stars because of the superior light of the sun ; but with a telescope they can be traced , and an astronomer ...
Page 68
... the additional Fig . 15 . PLANETARY ORBITS . characteristics of a planet's orbit . The orbit or ellipse just given is laid on a plane surface . Now , mcline it slightly , as compared with some other fixed 68 THE SOLAR SYSTEM .
... the additional Fig . 15 . PLANETARY ORBITS . characteristics of a planet's orbit . The orbit or ellipse just given is laid on a plane surface . Now , mcline it slightly , as compared with some other fixed 68 THE SOLAR SYSTEM .
Page 69
... fixed plane is the 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 ...
... fixed plane is the 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 ...
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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