Another Saturnian moon, for your viewing pleasure

[fivemack]

This is a 928x822 image, so after much persuasion I've lj-cutted it.





Maybe I have both an unfashionable interest in extra-terrestrial geography and a peculiarly low level of fastidiousness about knitting things together with GIMP, but I'm slightly surprised I've produced this Cassini mosaic of cliffs on Dione before it appears on the front page of nasa.gov

If anyone has an explanation not involving aliens for the perfectly straight, narrow valley just above and to the left of the middle of this image, inquiring minds want to know. I also like the way, just near the seam, that the rock-hard ice appears to have flowed like treacle (better seen on the original)

Comments

[major-clanger.livejournal.com]

It's also just visible on this Voyager image. The image is rotated 45 degrees clockwise with respect to your mosaic, and the line feature is thus vertical, near the right-hand edge of the disk. (The pair of craters just on the edge of Dione's disk in the Voyager image are the pair above and to the right of the line feature in the Cassini mosaic.)

MC