De revolutionibus orbium coelestium De revolutionibus orbium coelestium De revolutionibus orbium coelestium ("On the Revolutions of the Heavenly Spheres") is the seminal work on the heliocentric theory of the Renaissance astronomer Nicolaus Copernicus (1473–1543). The book, first printed in 1543 in Nuremberg, Holy Roman Empire, offered an alternative model of the universe to Ptolemy's geocentric system, which had been widely accepted since ancient times. Copernicus initially outlined his system in a short, untitled, anonymous manuscript that he distributed to several friends, referred to as the "Commentariolus". A physician's library list dating to 1514 includes a manuscript whose description matches the "Commentariolus", so Copernicus must
Comical History of the States and Empires of the Moon Sun has run out of fuel it will consume the planets and restart the cycle. He uses New France as evidence for this theory, claiming that its only being discovered not long ago by European explorers was because the Sun had only recently sent it to Earth. The narrator tries again to construct a way of reaching the Moon, this time through a flying machine that he launches off a cliff's edge. Though the craft crashes, local soldiers attach rockets to it, hoping that it will fly to celebrate the feast day of St. John the Baptist. Dismayed at this