Astronomy |
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Page 36
... Pluto ( the most remote of the planets ) . We shall first , however , make some general Mercury Venus Earth Mars こ О Jupiter Uranus C Neptune FIG . 12 Saturn Pluto remarks about the planetary system as a whole . The most notable ...
... Pluto ( the most remote of the planets ) . We shall first , however , make some general Mercury Venus Earth Mars こ О Jupiter Uranus C Neptune FIG . 12 Saturn Pluto remarks about the planetary system as a whole . The most notable ...
Page 60
William Marshall Smart. Pluto The most distant planet of all , namely , Pluto , was discovered early in 1930. In the telescope it is an extremely faint object , and it is surmised that it must be much smaller than the earth . The ...
William Marshall Smart. Pluto The most distant planet of all , namely , Pluto , was discovered early in 1930. In the telescope it is an extremely faint object , and it is surmised that it must be much smaller than the earth . The ...
Page 68
... Pluto , was fairly close to one of Lowell's predicted positions , and it was at first assumed that the achievements of Adams and Le Verrier had been repeated in all their essential details . Actually , Pluto proves to be a very small ...
... Pluto , was fairly close to one of Lowell's predicted positions , and it was at first assumed that the achievements of Adams and Le Verrier had been repeated in all their essential details . Actually , Pluto proves to be a very small ...
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absolute magnitudes actually angle apparent magnitudes appear astronomer atmo atmosphere atoms average density axis B-type binary star bright star brighter calculated called celestial Cepheids CHAPTER clouds colour comet comparatively component considerable constellation craters dark deduced diameter direction discovery distance double stars earth earth's orbit earth's surface eclipse galactic centre galactic system galaxy globe globular clusters gravitation heavens hemisphere Herschel hundred Jupiter Kepler's known light light-changes light-curve light-years lines lunar Mars Martian measured Mercury meteors miles per second Milky million miles minor planets moon moon's moving Neptune observations Observatory open clusters orbital periods photographic plate planetary Pluto position proper motions radial velocities revolve ring rotation satellites Saturn scale seen shown similar Sirius solar spectrum solar system space spectra Spectroscopic speed spiral nebulae spots star's stellar stellar distances sun-spot sun's mass sunlight supposed telescope temperature terrestrial tions Uranus variable star Venus violet visible wave-length