In October 2004, the Cassini spacecraft captured a series of images of Saturn that form the most detailed view of the planet ever seen; this one, currently on display at the Johnson Museum, comprises 126 shots assembled like tiles in a mosaic. The images were taken over the course of two hours, when Cassini was 3.9 million miles from Saturn. Details include the planet's shadow crossing the rings and blue-gray storms in the southern hemisphere. "Spectacular Saturn: Images from the Cassini-Huygens Mission" runs through January 4.