Image submitted by Mike Malaska, Chapel Hill, NC, USA.
"Here is an image sequence of what I think is a cloud under changing lighting conditions at sunrise. To create this montage, I used Photoshop CS3. For each image, I used the floor of the crater near the terminator in image #5 as 'standard' and tried to adjust the exposure so that all the images in the sequence had the same level of exposure. The images were aligned, then cropped just enough to show some of the surface near the terminator. I added the date and time for the image in the sequence. All the frames have a 0.2-second delay, except the last frame (image 12) which has a 0.5-second delay before looping."
The files used to create the animated GIF are: