On Jan. 31, 2011, NASA’s Cassini spacecraft passed by several of Saturn’s intriguing moons, snapping images along the way. Cassini passed within about 37,282 miles of Enceladus and 17,398 miles of Helene. It also caught a glimpse of Mimas in front of Saturn’s rings. In this image, Cassini snapped a picture of the famous jets erupting from the south polar terrain of Enceladus. Image Credit: NASA/JPL/SSI