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 Eartb may be a Planet.
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          <p>
            <s xml:space="preserve">
              <pb o="95" file="0275" n="275" rhead="That the Eartb may be a Planet."/>
            tude is fifty Thirds, which is comprehended
              <lb/>
            in that of the Sun 2160 times. </s>
            <s xml:space="preserve">Now if the
              <lb/>
            Sun were removed ſo far from us, that its
              <lb/>
            Diameter would ſeem but as one of that
              <lb/>
            number whereof it now contains 2160, then
              <lb/>
            muſt his diſtance from us be 2160 times
              <lb/>
            greater than now it is: </s>
            <s xml:space="preserve">which is all one, as
              <lb/>
            if we ſhould ſay, that a Star of the ſixth
              <lb/>
            Magnitude is ſevered from us by ſo many Se-
              <lb/>
            midiameters of the Earth's Orb. </s>
            <s xml:space="preserve">But now,
              <lb/>
            according to common conſent, the diſtance
              <lb/>
            of the Earth from the Sun, does contain 128
              <lb/>
            Semidiameters of the Earth; </s>
            <s xml:space="preserve">and (as was
              <lb/>
            faid before) this ſuppoſed diſtance of the
              <lb/>
            fixed Stars, does comprehend 2160 Semi-
              <lb/>
            diameters of the Earth's Orb. </s>
            <s xml:space="preserve">From whence
              <lb/>
            it is manifeſt, that the Semidiametey of the
              <lb/>
            Earth, in compariſon to its diſtance from the
              <lb/>
            Sun, will be almoſt doubly bigger than the
              <lb/>
            Semidiameter of the Earth's Orb, in com-
              <lb/>
            pariſon to this diſtance of the Stars. </s>
            <s xml:space="preserve">But
              <lb/>
            now the Semidiameter of the Earth, does
              <lb/>
            make very little difference in the appear-
              <lb/>
            ance of the Sun, becauſe we ſee common
              <lb/>
            Obſervations upon the Surface of it, are as
              <lb/>
            exactly true to the ſenſe, as if they were
              <lb/>
            made from the Centre of it. </s>
            <s xml:space="preserve">Wherefore,
              <lb/>
            that difference which would be made in
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            theſe fixed Stars, by the annual courſe of
              <lb/>
            the Earth, muſt needs be much more unob-
              <lb/>
            fervable, or rather altogether inſenſible.</s>
            <s xml:space="preserve"/>
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          <div type="float" level="2" n="12">
            <note position="left" xlink:label="note-0274-03" xlink:href="note-0274-03a" xml:space="preserve">Vid Galil.
              <lb/>
            ibid.</note>
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          <p>
            <s xml:space="preserve">2. </s>
            <s xml:space="preserve">The Conſequence of this Argument, is
              <lb/>
            grounded upon this falfe ſuppoſition, That
              <lb/>
            every Body muſt neceſſarily be of an equal</s>
          </p>
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