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61 Cygni actually appearance astronomers attraction axis beautiful bodies bright brilliant calculations celestial centre changes chapter circle circumstances comet compared constellation course crater diameter discovery distance double stars doubt earth ellipse enormous equal fact globe gradually greater heat heavens Herschel instrument interest journey Jupiter Kepler known labours law of gravitation laws of Kepler length less light lunar magnitude Mars mass measure Mercury meteorites meteors mighty miles a second minor planets minute moon motion move movements nearly nebula Neptune night object observations once orbit parallax pass path period phenomena planetary Pole Star position present proper motion question rays remarkable revolution revolve ring rotation round satellites Saturn seen shooting stars shower shown Sirius solar system spot stupendous sun's suppose surface tail telescope tion transit of Venus unaided eye Uranus vast velocity visible volcanoes weight
Page 292 - has done more, it has given us the probable prospect of another. We see it as Columbus saw America from the shores of Spain. Its movements have been felt
Page 417 - simultaneously overleaped at three different points. It is the greatest and most glorious triumph which practical astronomy has ever witnessed. Perhaps I ought not to speak so strongly; perhaps I should hold some reserve in favour of the bare possibility that it may be
Page 307 - Wherefore if it should return according to our prediction about the year 1758, impartial posterity will not refuse to acknowledge that this was first discovered by an Englishman.
Page 105 - the law of gravitation announces that " every body in the universe attracts every other body with a force which varies inversely as the square of the distance.
Page 357 - a singular miracle occurred, for between eleven o'clock and noon there was a loud clap of thunder and a prolonged confused noise, which was heard at a great distance, and a stone fell from the air in the jurisdiction of Ensisheim which weighed 260 pounds, and the confused noise was