Phobos and Jupiter - Mars Express
HRSC Super-Resolution Channel image of Phobos with Jupiter in the background. Ganymede is visible to the left of Jupiter, while Europa and Callisto are visible to the right. Image was acquired during Mars Express' 12,151st orbit of Mars, July 21, 2013.
Image Credit: ESA/DLR/FU Berlin/J. Cowart, CC BY-SA 3.0 IGO