Wisps Before Craters January 31, 2011 Saturn's ''wispy'' moon
Dione lies in front of the cratered surface of the moon Tethys,
as seen by the Cassini spacecraft. Dione is closest to the
spacecraft here. At the top of the image, the bright ''wispy''
fractures are visible on Dione (1,123 kilometers, or 698 miles,
across). See Dione's Icy Wisps and Highest Resolution View of
Dione to learn more. Beyond wispy Dione, the large crater
Penelope can be seen near the equator of Tethys (1,062
kilometers, or 660 miles, across). See Penelope Crater for a
closer view of Penelope. Lit terrain seen here is on the
trailing hemispheres of the two moons. The image was taken in
visible red light with the Cassini spacecraft narrow-angle
camera on Dec. 6, 2010. The view was obtained at a distance of
approximately 2.1 million kilometers (1.3 million miles) from
Dione and at a Sun-Dione-spacecraft, or phase, angle of 75
degrees. The view was obtained at a distance of approximately
2.2 million kilometers (1.4 million miles) from Teth