14. Their Distance from the Earth.
FOR the place or distance of Comets, some will needs throw them all below the Moon; in which number are, Regiomontanus, Pontanus, Fracostorius, Apian, Junctinus, Scaliger, Claramontius, and Dassi∣podius: Others will have them all above the Moon; as Seneca, Cardanus, Tycho, Longomontanus, Galilaeus, Blanchanus, and Rothmanuus: Another sort do allow either of some above and some below, or of some that are sometimes below and sometimes above: In which Rank are, Maestline, Apian, Camerarius, Gloriosus, Clavius, Maurolicus, Fromundus, Licetus, Cabaeus, and Resta. Kepler and Gisatus aver one and the same Comet hath been one day above; and another day be∣low the Moon; yet for the most part above her.
But the greatest part of our late Observers distin∣guish them into Elementary and Sublunary.
The Coelestial is maintain'd by many Arguments, whereof that is the strongest, which is taken from the Parallax, or diversity of Aspect.
For from hence Tycho and Kepler do prove, that a Star, or any other visible Body impending or moving in the Air, by how much lesser Parallax it hath, is by so much the higher elevated from the C••nter of the Earth. And because many Comets have been found to have lesser Parallax than the Moon, they therefore