De prodigiosa specie, naturaq[ue] cometae, qui nobis effulsit altior lunae sedibus, insolita prorsus figura, ac magnitudine, anno 1577 plus septimanis 10. apodeixis tum physica tum mathematica

Therefore, lest so great a majesty of the thing and so marvelous a portent of the eternal Divine be finally utterly extinguished from the memory of posterity, too much debased by vulgar nursery tales and the sloth of triflers, it has pleased us to append to it the memorable theory for the coming century, which we recently published regarding the New Star Reference to the Supernova of 1572, known as Tycho's Supernova, the excellence of which is such that whatever portents are flourishing anywhere in these places and times are referred as if to one circuit and capital judgment, and serve under it, not otherwise than we see diverse leaders and prefects reviewed in one expedition under one emperor or the head of the whole war.

Order of the whole description.

Wherefore, if anyone wishes to know the nature, powers, and significations of the present phenomenon (for it is, it is to go forth as far as is allowed, beyond which it is not given to go), it is necessary that he inquire diligently according to the common method first concerning the causes and principles of its generation, concerning its total constitution, such as place, time, magnitude, motion, figure, and other qualities, and the analogy to neighboring stars and parts of the sky. For the sake of this, sense and industry are primarily needed, which we have also expended as much as we could on the individual days on which it was permitted to see it, so that before the judgment or