[151] It had been Marius's names for the most important moons, however, that stuck: Io, Europa, Ganymede, and Callisto. The discovery was a major stage in favour in the heliocentric concept on the motions on the planets by Nicolaus Copernicus; Galileo's outspoken assist with the Copernican principle brought about him https://billl666jbu9.blogthisbiz.com/profile