Upon confirming his observations, three years later he revealed it to mean "Annuto cingitur, tenui. Galileo Galilei turned a telescope to the sky, he became the first person to observe Saturn's rings, though he could not see them well enough to discern their true nature. "Questions about Saturn's rings". The separation between the A ring and the F Ring has been named the Roche Division in honor of the French physicist Édouard Roche. 69 It is caused by the presence of the small moon Pan, 70 which orbits within. Feedback, leave feedback about your eBay search experience. Monthly Notices of the Royal Astronomical Society. However, new research indicates that the B Ring may be massive enough to have diluted infalling material and thus avoided substantial darkening over the age of the Solar System. 115 Ring material migrates inward due to reemission of solar radiation, 109 with a speed inversely proportional to particle size; a 3 cm particle would migrate from the vicinity of Phoebe to that of Iapetus over the age of the Solar System.