Reuters - Sun Aug 21, 1:06 PM ET
Space shuttle Discovery, riding on the back of a modified Boeing 747, flies past the control tower before landing at the Kennedy Space Center in Cape Canaveral, Florida August 21, 2005. The space shuttle Discovery completed a cross-country ride and returned to Florida on Sunday, nearly two weeks after finishing NASA's first mission since the 2003 Columbia accident. (Charles W Luzier/Reuters)