[151] It had been Marius's names for the major moons, on the other hand, that trapped: Io, Europa, Ganymede, and Callisto. The discovery was A significant stage in favour of your heliocentric principle on the motions in the planets by Nicolaus Copernicus; Galileo's outspoken aid on the Copernican theory triggered https://charlesc322vnd1.wikibriefing.com/user