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broken-up planet. He then commenced a
                                         search for other fragments. In 1804 Harding
                                         discovered Juno, and in 1807 Olbers found
                                         Vesta. The next one was not discovered
                                         until 1845, from which date asteroids, or
                                         minor planets (as these small planets are
                                         called), have been found almost every year.
                                         They now number about 700.
                                            It is impossible to give any idea of the
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