Cassini’s view of Dione & Tethys on April 4, 2015 4월 8, 2015 으로 우주를 관찰 이 글 공유하기: Cassini captured this image of Dione and Tethys on April 4, 2015 그 CL1과 CL2 필터를 사용하여. Below is a vine that uses several images that Cassini captured. The vine shows Dione near the center, with Tethys passing behind the south pole of Dione. 이 글 공유하기: