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 Moon may be a World.
nets about it; and amongſt theſe, Venus (it may
be) beſtows a more eſpecial brightneſs, ſince
Galilæus hath plainly diſcern’d, ſhe that ſuffers
the ſame increaſes and decreaſes, as the Moon
hath, and ’tis probable that this may be per-
ceived there, without the help of a Glaſs, be-
cauſe they are far nearer it than we.
Venus (ſaith Keplar) lies down in her Perige,
or lower part of her ſuppos’d Epicycle, then
is ſhe in Conjunction with her Husband the
Sun, from whom after ſhe hath departed for
the ſpace of ten months, ſhe gets plenum ute-
rum, and is in the Full.
But you’l reply, though Venus may beſtow
ſome light when ſhe is over the Moon, and in
Conjunction, yet being in Oppoſition ſhe is
not viſible to them, and what ſhall they then
do for Light?
I anſwer, then they have none, nor doth this
make ſo great a difference betwixt thoſe two
Hemiſpheres, as there is with us, betwixt the
places under the Poles, and the Line.
beſides,’tis conſiderable, that there are two kind
of Planets.
1. Primary, ſuch whoſe proper Circles do
encompaſs the Body of the Sun, whereof there
are Six, Saturn, Fupiter, Mars, Geres, or the
Earth, Venus, Mercury.
As in the Frontiſpiece.
2. Secondary, ſuch whoſe proper Circles
are not about the Sun, but ſome of the other
primary Planets.
Thus are there two about
Saturn, four about Fupiter, and thus likewiſe
does the Moon encompaſs our Earth.
’tis probable that theſe leſſer ſecondary Pla-
nets, are not ſo accomodated with all Conve-

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