This shot shows a group of hikers on top of the eastern rim of "Gusev Crater", looking at the fantastic and truly unearthly spectacle of a sunset on Mars.
During the day, the Martian sky is a mixture of a grayish yellow and green (like in the previous shot). But when the sun sets, fine dust particles in the atmosphere gives it a rusty reddish shade, and around the sun - where we on Earth are used to see a fiery red - the Martian sky glows blue.
For the background environment of this shot I used this amazing photo
taken by NASAs exploration rover Spirit in 2005. Due to the not so high resolution I had to rebuild the rocks in the foreground in CG, which in turn made me able to do the tracking movement towards the rim.