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
Sun goddess of the Earth she is mostly attested in curses, oaths, and purification rituals. The Sun goddess of the Earth was worshipped in various places in the Hittite Empire, such as , A(n)galiya near , Ankuwa, Nerik, and Zippalanda. Her worship is also attested in the land of Kizzuwatna. Sun goddess of the Earth The Sun goddess of the Earth (Hittite: "taknaš UTU", Luwian: tiyamaššiš Tiwaz) was the Hittite goddess of the underworld. Her Hurrian equivalent was and her Sumerian/Akkadian equivalent was Ereshkigal, both of which had a marked influence on the Hittite goddess from an early date. In the Neo-Hittite period, the Hattian