The Moons of Jupiter

Callista, Ganymede, Europa, Io: these four, their twinkling spied by Galileo in his new-invented telescope, debunked the dogma of celestial spheres great bubbles of crystal turning one within the other, our green and pancake Earth the Edenic center, and like a beehive Purgatory hung below, and angels scattered all throughout, chiming and trumpeting across the curved interstices their glad and constant news. Not so. E pur si muove, Galileo muttered, sotto voce, having recanted to the Pope.