The Geography of the Heavens, and Class Book of Astronomy: Accompanied by a Celestial Atlas |
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Page 28
... Polar Circles are two small circles , each about 661 ° from the equator , being always at the same distance from the poles that the tropics are from the equator . The northern is called the Arctic circle , and the southern the Antarctic ...
... Polar Circles are two small circles , each about 661 ° from the equator , being always at the same distance from the poles that the tropics are from the equator . The northern is called the Arctic circle , and the southern the Antarctic ...
Page 32
... Polar Star . Its position is ap- parently the same every hour of the night throughout the year , while the other stars are continually moving . Many of the stars also in that region of the skies never set , so that when the sky is clear ...
... Polar Star . Its position is ap- parently the same every hour of the night throughout the year , while the other stars are continually moving . Many of the stars also in that region of the skies never set , so that when the sky is clear ...
Page 36
... Polar Star point out to astronomers the position of that great circle in the heavens from which the right ascension of all the heavenly bodies is measured . HISTORY . - The story of Andromeda , from which this constellation derives its ...
... Polar Star point out to astronomers the position of that great circle in the heavens from which the right ascension of all the heavenly bodies is measured . HISTORY . - The story of Andromeda , from which this constellation derives its ...
Page 38
... Polar Star . It may be What a ne boundar is of this constellation ? How is the constellation Cassiopeia ad 22 12 By whom is she surrounded ? How is this constellation Linted & * meda and the polar star ? seen , from our latitude , at ...
... Polar Star . It may be What a ne boundar is of this constellation ? How is the constellation Cassiopeia ad 22 12 By whom is she surrounded ? How is this constellation Linted & * meda and the polar star ? seen , from our latitude , at ...
Page 39
... Polar Star , for determi- ning the latitude of places , and for discovering the magnetic variation of the needle . It is generally supposed that the North Polar Star , so called , is the real immove . able pole of the heavens ; but this ...
... Polar Star , for determi- ning the latitude of places , and for discovering the magnetic variation of the needle . It is generally supposed that the North Polar Star , so called , is the real immove . able pole of the heavens ; but this ...
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Common terms and phrases
3d magnitude 4th magnitude ancient angle appear Arcturus Argo Navis Aries astronomers Auriga axis Beta brightest called Cassiopeia celestial centre Cepheus circle cluster colure comet constellation Cor Caroli declination degree Denebola diameter direction distinguished diurnal motion Earth east ecliptic equal equator equinoctial figure fixed stars Gamma globe head heavenly bodies heavens Hercules Herschel horizon Jupiter latitude length Libra light longitude luminous Mars mean distance Mercury meridian millions of miles minutes Moon Moon's motion naked eye nearly nebulæ night node north pole northern hemisphere o'clock observed orbit Orion parallax passing perihelion period Perseus phenomena planets Pleiades polar star principal star represented revolution revolve right ascension rise satellites Saturn seasons seen side sidereal Sirius situated small stars solar system solstice southern spots square Sun's supposed surface Taurus telescope tion triangle Ursa Venus vernal equinox Virgo visible whole number Zeta Zodiac