Streaks on Dione

Caption NASA originale:"Wispy streaks curl over the horizon on Saturn's moon Dione, caught here in a distant view from Cassini. The streaks were first revealed by NASA's Voyager spacecraft and subsequently were shown by Cassini to be an immense system of linear fractures in the moon's surface. The image was taken with the Cassini spacecraft narrow-angle camera using a filter sensitive to wavelengths of ultraviolet light centered at 338 nnmts. The image was acquired on Feb. 18, 2005, at a distance of approximately 1,3 MKM from Dione and at a phase angle of 118°. The image scale is 8 Km per pixel".