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
Superman and the Legion of Super-Heroes After blacking out, Superman awakens and is confronted by Brainiac 5, who reveals that his dictatorship of the planet is fabricated as a way to keep Colu, which is the strategic beachhead of a proposed United Planets attack on Earth, from completing their plans. On Earth, Chameleon Girl sneaks into the Justice League's headquarters, and discovers that they captured Sun Boy and placed him into a machine that uses his powers to tint the sun red. Superman, Brainiac 5, and Colossal Boy find the other Legionnaires and the crystal data tablet containing the false claims regarding Superman's origins. Earth-Man reveals