Cassini’s view of Dione & Tethys on April 4, 2015 四月 8, 2015 由 观察空间 分享此: Cassini captured this image of Dione and Tethys on April 4, 2015 利用其CL1和CL2滤波器. 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. 分享此: