From CassiniSaturn https://twitter.com/CassiniSaturn on Twitter: We caught this look at Jupiter and its volcanic moon Io as the spacecraft passed by, en route to Saturn, 17 years ago this week. https://saturn.jpl.nasa.gov/resources/7385/?category=images https://twitter.com/CassiniSaturn/status/949701665526960129/photo/1 https://chirp.cooleysekula.net/attachment/47007