Aboard the International Space Station, Expedition 50 Flight Engineer Peggy Whitson of NASA sent holiday greetings and festive imagery from the cupola on Dec. 18.
This image from NASA's Cassini spacecraft is one of the highest-resolution views ever taken of Saturn's moon Pandora. Pandora (84 kilometers, or 52 miles across) orbits Saturn just outside the narrow F ring.
This week in 1968, Apollo 8, the first crewed Saturn V launched from NASA's Kennedy Space Center on Dec. 21, 1968. Here, the S-IC stage is being erected for final assembly of the Saturn V launch vehicle in Kennedy's Vehicle Assembly Building.
This composite image, made from ten frames, shows the International Space Station, with a crew of six onboard, in silhouette as it transits the sun at roughly five miles per second, Saturday, Dec. 17, 2016, from Newbury Park, California.
Although there are no seasons in space, this cosmic vista invokes thoughts of a frosty winter landscape. It is, in fact, a region called NGC 6357 where radiation from hot, young stars is energizing the cooler gas in the cloud that surrounds them.
Spiral galaxy IC 5201 sits 40 million light-years from us in the Crane constellation. As with most spirals we see, it has a bar of stars slicing through its center.