Voyager 1 looked back at Saturn on Nov. 16, 1980, four days after the spacecraft flew past the planetNASA/JPLBy Will GaterWe could have spotted the majestic icy plumes of Saturn’s moon Enceladus 25 years earlier than we did, if only we’d known to look. The vast fountains of icy material erupting from Enceladus’s south pole enthralled planetary scientists...