Space shuttle Discovery launches on final flight

NASA's most traveled space shuttle, Discovery, launched Thursday for its final voyage after nearly three decades of service. The six astronauts for the space station delivery mission headed to the launch pad in early afternoon, waving and smiling to the massive picture-taking crowd at crew quarters. Once at the pad, they paused at the base of the pad to gaze up at Discovery and embraced in a group hug, before getting on board. The crew never made it that far before; November's launch attempt ended midway through fueling. This time, no hydrogen gas seeped out during fueling. More

(Source: CBS News - Feb 24)