Fourteen Weeks in Descriptive Astronomy |
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Page 35
... CELESTIAL SPHERE . - The blue arch of the sky , as it appears to be spread above us , is termed the Celestial Sphere . There are two points to be no- ticed here . First , that so far distant is this imagi- nary arch from us , that if ...
... CELESTIAL SPHERE . - The blue arch of the sky , as it appears to be spread above us , is termed the Celestial Sphere . There are two points to be no- ticed here . First , that so far distant is this imagi- nary arch from us , that if ...
Page 39
Joel Dorman Steele. as the parallels of terrestrial latitude extended to the Celestial Sphere . ( c ) The POINTS are the Celestial Poles and the Equinoxes . The Celestial Poles are the points where the axis of the earth extended pierces ...
Joel Dorman Steele. as the parallels of terrestrial latitude extended to the Celestial Sphere . ( c ) The POINTS are the Celestial Poles and the Equinoxes . The Celestial Poles are the points where the axis of the earth extended pierces ...
Page 41
... Celestial Sphere . ( Little used . ) The Equinoxes are the points where the ecliptic intersects the equinoctial . The place where the sun crosses the equinoctial * in going North , which occurs about the 21st of March , is called the ...
... Celestial Sphere . ( Little used . ) The Equinoxes are the points where the ecliptic intersects the equinoctial . The place where the sun crosses the equinoctial * in going North , which occurs about the 21st of March , is called the ...
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Common terms and phrases
ancients angle aphelion appear astronomers atmosphere axis bright brilliant called Capricornus Cassiopeia Celestial Sphere centre circle color comet conjunction constellation Cor Caroli dark density diameter disk earth east ecliptic equal equator equinoctial figure fixed stars full moon globe heat heavenly bodies heavens Hercules Herschel horizon inclined inferior inferior conjunction inferior planet Jupiter latitude length light longitude luminous lunar magnitude Mars mean distance measured Mercury meridian meteors miles moon moon's motion move naked eye nearly nebula Neptune night node north pole obliquity observer orbit parallax pass path penumbra perihelion Perseus planet polar position rays revolve Right Ascension ring rotation satellites Saturn seasons seen shadow shine side sidereal sidereal day solar system space spots summer sun's superior planet supposed surface synodic revolution tance Taurus telescope theory tion Uranus Ursa Major varies velocity Venus vernal equinox visible zenith zodiac