At the moment, none are in space. The shuttle program has now finished and they will not fly again.
4 Space Shuttles existed in 2011. Including the test vehicle, Space Shuttle Enterprise. Space Shuttles that actually went into space? 3. Discovery, Atlantis, and Endeavour.
Currently NASA have three space shuttles Discovery, Atlantis and Endeavour.
none.
13
NASA built a total of five space shuttles: Columbia, Challenger, Discovery, Atlantis, and Endeavour. These shuttles were in operation from 1981 to 2011.
119
None.
none
Two space shuttles have crashed: Challenger in 1986 and Columbia in 2003. Both incidents resulted in the loss of the crew on board.
NASA space shuttles
30 years
There is a total of five space shuttles that belonged to NASA. These shuttles are Discovery, Atlantis, Endeavour, Columbia, and Challenger. However, they have all been retired from service.