Space Shuttle landing at Edwards, the orbiter was flown back to the KSC on the Shuttle Carrier Aircraft, a specially modified Boeing 747. The first orbiter, "Enterprise", was built in 1976, used in Approach and Landing Tests and had no orbital capability. Four fully operational orbiters were initially built: "Columbia", "Challenger", "Discovery", and "Atlantis". Of these, two were lost in mission accidents: "Challenger" in 1986 and "Columbia" in 2003, with a total of fourteen astronauts killed. A fifth operational (and sixth in total) orbiter, "Endeavour", was built in 1991 to replace "Challenger". The Space Shuttle was retired from service upon the conclusion
Space Shuttle Mission 2007 Space Shuttle Mission 2007 Space Shuttle Mission 2007, is a highly realistic Space Shuttle stand-alone mission simulator for Microsoft Windows. The simulator was released on January 1, 2008 after having been under development for more than six years. The main purpose of "Space Shuttle Mission 2007" is to allow the gamer to experience real historical NASA Space Shuttle missions from liftoff (T-00:01:50:00) to landing. Initially, "Space Shuttle Mission 2007" was released with a set of 11 missions but as time passed, the development team has been releasing new missions as free add-ons. The missions include satellite deployment and servicing (including