Crowds start to gather at the Shuttle Landing Facility (SLF) in preparation for the landing of the space shuttle Discovery, Wednesday, March 9, 2011, at Kennedy Space Center in Cape Canaveral, Fla. This was Discovery's final flight. Discovery flew 39 missions, spent 365 days in space, orbited Earth 5,830 times and traveled 148,221,675 miles. Photo credit: (NASA/Bill Ingalls)