Astronomia crystallin[a]: or, A new and clear way to know and perceive all the motions of the heavens, and also the motion of the earth plainly, as through a crystal-glass. : Far more easie and perspicuous than any before extant. Whereunto is now added a postscript by way of dialogue, between the author and two grand objectors; wherein all objections are fully answered, and the objectors clearly confuted. Composed according to the best observations, and most rational grounds of art