Space shuttle Discovery makes final flight

Sixth-graders visiting the Capitol from from the Stratford Academy in Macon, Ga., watch the final voyage of the space shuttle Discovery as it soars above Washington after a flight from Cape Canaveral, Fla., Tuesday, April 17, 2012. Discovery , the world's most traveled spaceship, now becomes an attraction at the Smithsonian's National Air and Space Museum's Stephen F. Udvar-Hazy Center in Chantilly, Va., next to Dulles International Airport. (AP Photo/J. Scott Applewhite)