On May 22, Cassini saw Tethys passing behind Titan as both appeared close to Saturn. Saturn's limb is actually in the image -- its ringlit northern hemisphere is visible as a curving patch of dark gray on the upper left.
Our LightSail test mission was successfully completed and our Kickstarter campaign ended June 26th, raising $1.24 million dollars for LightSail's 2016 solar sailing mission! Miss the Kickstarter campaign, but still want to donate? You can!