From awe-inspiring planets and stars to astronauts at work and stunning satellite images, a selection of the year's best photos from outer space.
Stunning Saturn photo: A natural-color image of Saturn from space, the first in which Saturn, its moons and rings, and Earth, Venus and Mars, all are visible, is seen in this NASA photo taken from the Cassini spacecraft on July 19 and released on November 12. The image captures 404,880 miles across Saturn and its inner ring system, including all of Saturn's rings out to the E ring, which is Saturn's second outermost ring. Cassini's imaging team processed 141 wide-angle images to create the panorama. Click through for more amazing space photos from the last year.