Page 614 - 89 history of astronomy_opt
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were so far ahead of theory that hopeless
                                         confusion appeared to reign; and then one
                                         chance result has given a clue, and from
                                         that time all differences and difficulties in
                                         the previous researches have stood forth as
                                         natural consequences, explaining one another
                                         in a rational sequence.  So we find par-
                                         allax, proper motion, double stars, binary
                                         systems, variable stars, and new stars all
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