Giordano Bruno motion of the stars to be an illusion caused by the rotation of the Earth on its axis; he also preserved the notion of an immobile center, but it was the Sun rather than the Earth. Copernicus also argued the Earth was a planet orbiting the Sun once every year. However he maintained the Ptolemaic hypothesis that the orbits of the planets were composed of perfect circles—deferents and epicycles—and that the stars were fixed on a stationary outer sphere. Despite the widespread publication of Copernicus' work "De revolutionibus orbium coelestium", during Bruno's time most educated Catholics subscribed to the Aristotelian
Gardens of the Sun Brazil attempted to return most of the planet to a "natural" state, to the extent that most of Earth's population inhabits a few megacities. The Outers, by contrast, survive by terraforming the moons of Jupiter and the other outer planets and practicing genetic engineering, which caused ideological tension with Greater Brazil, ultimately flaring into a full-scale conflict called the "Quiet War". By the time of "Gardens of the Sun", the war is over. The surviving Outers have been forced to Uranus, Neptune and Pluto as the superpowers of Earth raid the moons of Jupiter and Saturn for Outer knowledge. However,