Shuttle Chicken

Space Shuttles Discovery and Endeavour face off outside Orbiter Processing Facility-3 (OPF-3) at the Kennedy Space Center in this NASA handout photo dated August 11, 2011. The two orbiters, following the agency's final shuttle mission, are being readied for a ceremonial "epic smash joust" to provide a dignified send-off to the 30-year Space Transportation System program. Photo: NASA / Reuters