From a glorious view of Saturn to the Geminid meteor shower, view our monthly roundup of cosmic highlights from December 2012.
Window on Infinity: Pictures from Space
ESA
The European Space Agency's Galileo navigation system — a state of the art, orbiting GPS network — got a big boost with the launch of the third and fourth satellites in the four-spacecraft fleet, courtesy of a Soyuz Rocket in French Guiana.