Wilkins, John, A discovery of a new world : or a discourse tending to prove, that 'tis probable there may be another Habitable World in the Moon ; with a discourse concerning the Probability of a Passage thither; unto which is added, a discourse concerning a New Planet, tending to prove, that 'tis probable our earth is one of the Planets

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That the Earth may be a Planet.
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              <pb o="154" file="0334" n="334" rhead="That the Earth may be a Planet."/>
            bigneſs of the Orbs, and the time of their
              <lb/>
            Motions: </s>
            <s xml:space="preserve">For then, next to the Sun, or
              <lb/>
            Centre, there will be the Sphere of Mercu-
              <lb/>
            ry; </s>
            <s xml:space="preserve">which as it is but narrow in its Diame-
              <lb/>
            ter, ſo likewiſe is it quick in its Motion,
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            running its Courſe in eighty eight days:
              <lb/>
            </s>
            <s xml:space="preserve">Venus, that is next unto it, in 224 days: </s>
            <s xml:space="preserve">
              <lb/>
            The Earth in 365 days, or a Year: </s>
            <s xml:space="preserve">Mars
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            in 687 days: </s>
            <s xml:space="preserve">Jupiter in 4332 days: </s>
            <s xml:space="preserve">Saturn
              <lb/>
            in 10759 days. </s>
            <s xml:space="preserve">Thus likewiſe is it with
              <lb/>
            thoſe Medicean Stars that encompaſs Jupi-
              <lb/>
            ter. </s>
            <s xml:space="preserve">That which is loweſt amongſt them,
              <lb/>
            finiſhes his Courſe in two and twenty hours; </s>
            <s xml:space="preserve">
              <lb/>
            the next in three days and an half; </s>
            <s xml:space="preserve">the third
              <lb/>
            in ſeven days; </s>
            <s xml:space="preserve">and the fartheſt in ſeventeen
              <lb/>
            days. </s>
            <s xml:space="preserve">Now as it is (according to Ariſto-
              <lb/>
            tle’s conſeſſion) more likely that Nature
              <lb/>
            ſhould obſerve ſuch a due proportion betwixt
              <lb/>
            the Heavenly Orbs; </s>
            <s xml:space="preserve">ſo is it more probable,
              <lb/>
            that the Earth ſhould move, rather than the
              <lb/>
            Heavens.</s>
            <s xml:space="preserve"/>
          </p>
          <p>
            <s xml:space="preserve">Arg. </s>
            <s xml:space="preserve">5. </s>
            <s xml:space="preserve">This may likewiſe be confirmed
              <lb/>
            from the appearance of Comets: </s>
            <s xml:space="preserve">Concern-
              <lb/>
            ing which, there are three things common-
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            ly granted; </s>
            <s xml:space="preserve">or if they were not, might be
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            eaſily proved: </s>
            <s xml:space="preserve">namely,</s>
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          <p>
            <s xml:space="preserve">1. </s>
            <s xml:space="preserve">That there are divers Comets in the
              <lb/>
            Air, betwixt the Moon and our Earth.</s>
            <s xml:space="preserve"/>
          </p>
          <p>
            <s xml:space="preserve">2. </s>
            <s xml:space="preserve">That many of theſe Comets do ſeem
              <lb/>
            to riſe and ſet as the Stars.</s>
            <s xml:space="preserve"/>
          </p>
          <p>
            <s xml:space="preserve">3. </s>
            <s xml:space="preserve">That this appearing Motion is not pro-
              <lb/>
            perly their own, but communicated unto
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            them from ſomewhat elſe.</s>
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          </p>
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