Smart Living A brief astronomical history of Saturn's amazing rings Updated : August 15, 2019 01:36 PM IST Four decades later, Giovanni Cassini first suggested that Saturn was a ringed planet, and what Galileo had seen were different views of Saturn’s rings. Astronomers understanding of the rings changed dramatically with the Pioneer 11 and twin Voyager missions to Saturn. The reason why the giant planets are adorned with rings and Earth and the other rocky planets are not was first proposed by Eduard Roche, a French astronomer in 1849. Subscribe to Moneycontrol PRO at just Rs.33/- per month for the first year. Use code SUPERPRO. Limited period offer. Available on Web and Android.