...The transformation ofmotion into heat, and the combination of the cometary gases with theoxygen of our atmosphere might produce a conflagration, or a generalpoisoning of the atmosphere... 
Camille Flammarion Frances A. Welby 「Astronomy for Amateurs」
...They come to us from a vastdistance, from millions on millions of miles, and circle in swarmsaround the Sun, following a very elongated ellipse which closelyresembles that of the cometary orbit...
Camille Flammarion Frances A. Welby 「Astronomy for Amateurs」
...He also directed his attention to the study of cometary bodies, andarrived at certain conclusions with regard to the nature of theirmovements...
Thomas Orchard 「The Astronomy of Milton's 'Paradise Lost'」
...But the case is verydifferent when we deal with the actual cometary orbits...
Robert Stawell Ball 「The Story of the Heavens」
...We have,indeed, on more than one occasion, actually witnessed the violentdisturbance of a cometary orbit...
Robert Stawell Ball 「The Story of the Heavens」
...Halley saw it in 1682, and predicted itsreturn in 1758 or 1759—the first cometary prediction...
Oliver Lodge 「Pioneers of Science」
...The swarms travel along pathsthat resemble cometary orbits; they are very elongated ellipses,inclined at all angles to the plane of the ecliptic...
E. Walter Maunder 「The Astronomy of the Bible」
...For a full account of the wonders of the cometary world the reader is referredto books on descriptive astronomy, or to monographs on comets...
George Forbes 「History of Astronomy」
...Their eccentric and irregular paths may undergothe most enormous derangements; indeed, the history of astronomycontains many instances of the vicissitudes to which a cometary careeris exposed...
Robert Stawell Ball 「The Story of the Heavens」
... or Cometary Planets? or...
Edward Singleton Holden 「Sir William Herschel: His Life and Works」
...The cometary discoveries of these men afford anexcellent illustration of how much can be done with the smallest meanswhen one sets to work in the right spirit...
Simon Newcomb 「Side-lights on Astronomy and Kindred Fields of Popular Science」
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