Page 209 - 89 history of astronomy_opt
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earth attracts a stone much more than a
                                         stone attracts the earth.
                                            3. Bodies are attracted to the earth’s
                                         centre, not because it is the centre of the
                                         universe, but because it is the centre of the
                                         attracting particles of the earth.
                                            4. If the earth be not round (but spheroidal?),
                                         then bodies at different latitudes will not
                                         be attracted to its centre, but to different
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