a velocity that is beyond all rea- That the tail of a comet may be of enormous extent know, there may be comets whose nuclei are not only son. The comet of 1843 accomplished a complete re- has been recognized from Newton's time. He calcu- large but massive. A collision with such a visitor versal of… … T.he Two Views of Brook's Comet Superposed, One upon the Other, to Compare Deflection of the Tail.—Photographed by Barnard. The Multiple-Tailed Comet of 1744. Brook's Comet on November 2, 1893. Brook's Comet Twenty-four Hours Later; Tails of the Comet of 1858. Note Direction of Tail. Tail Deflected…
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