Space Shuttle Endeavour: National Aeronautics and Space Administration

The Space Shuttle, part of the Space Transportation System (STS), is an American spacecraft operated by NASA for orbital human spaceflight missions. The first of four test flights occurred in 1981, which were followed by operational flights beginning in 1982. The system is scheduled to be retired from service in 2010 after 134 launches.











Space Shuttle Endeavour (Orbiter Vehicle Designation: OV-105) is one of three currently operational orbiters in the Space Shuttle fleet of NASA, the space agency of the United States.(The other two are Discovery and Atlantis.)











Endeavour is the fifth and final spaceworthy NASA space shuttle to be built, constructed as a replacement for Challenger. Endeavour first flew in May 1992 on mission STS-49 and is scheduled for decommissioning in 2010.Before being decommissioned NASA expects to utilize Endeavour for the STS-130 and STS-134 missions.