Elementary Lessons in Astronomy |
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Page 17
... double , triple , or quadruple ; and in some instances the number of stars revolving round C a centre common to all is even greater . Because CHAP . I. ] THE STARS AND NEBULÆ . 17 -Double and Multiple Stars Variable Stars.
... double , triple , or quadruple ; and in some instances the number of stars revolving round C a centre common to all is even greater . Because CHAP . I. ] THE STARS AND NEBULÆ . 17 -Double and Multiple Stars Variable Stars.
Page 18
... instance , a first magnitude star may have a companion of the four- teenth magnitude . Sirius has , at least , one very faint 1 Admiral Smyth . companion . Here is a list of some double stars. 18 [ CHAP . I. ASTRONOMY . Orbit of a Double ...
... instance , a first magnitude star may have a companion of the four- teenth magnitude . Sirius has , at least , one very faint 1 Admiral Smyth . companion . Here is a list of some double stars. 18 [ CHAP . I. ASTRONOMY . Orbit of a Double ...
Page 22
... of hydrogen being produced by the collisions . 56 ( a ) . A similar apparition took place in the constellation Cygnus on the 24th of November , 1876. In this instance the 3 DAYS . 1 2 MAC 3 3 [ + 22 [ CHAP . I. ASTRONOMY .
... of hydrogen being produced by the collisions . 56 ( a ) . A similar apparition took place in the constellation Cygnus on the 24th of November , 1876. In this instance the 3 DAYS . 1 2 MAC 3 3 [ + 22 [ CHAP . I. ASTRONOMY .
Page 33
... instance . The six or seven stars visible to the naked eye become 60 or 70 when viewed with a telescope of moderate power , while no less than 1,421 have recently been photo- graphed . The Hyades , in the constellation Taurus , and the ...
... instance . The six or seven stars visible to the naked eye become 60 or 70 when viewed with a telescope of moderate power , while no less than 1,421 have recently been photo- graphed . The Hyades , in the constellation Taurus , and the ...
Page 34
... be seen . The Dumb- Bell cluster , in Vulpecula , and the Crab cluster , in Taurus , both of which have been resolved into stars , are instances of this . 75. In some of these star - clusters the increase 34 [ CHAP . I. ASTRONOMY .
... be seen . The Dumb- Bell cluster , in Vulpecula , and the Crab cluster , in Taurus , both of which have been resolved into stars , are instances of this . 75. In some of these star - clusters the increase 34 [ CHAP . I. ASTRONOMY .
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Common terms and phrases
angle aphelion appear Assistant Master astronomers atmosphere attraction axis Boötes called Cambridge celestial equator celestial pole celestial sphere centre circle clock College comet constellation determined diameter direction Earth Earth's rotation Earth's surface ecliptic ELEMENTARY equal equatorial equinox exactly eye-piece fact Fcap follows globe GREEK Greenwich heavenly bodies heavens horizon Illustrated inclined Jupiter latitude length lens LESSON light longitude Mars mass measured meridian meteorites meteors miles Moon Moon's motion nearly nebulæ Neptune node object-glass observed occupied orbit parallax path penumbra perihelion planet point of Aries polar pole portion position prism Prof Professor rays refraction represent revolution revolve round right ascension ring round the Sun satellites Saturn seen shadow side sidereal solar day solstice spectrum spots stars Sun's suppose telescope tion transit travel round triangle true sun Uranus Ursa Ursa Major vapour velocity Venus vernal equinox visible
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