At the moment, none are in space. The shuttle program has now finished and they will not fly again.
3 space shuttles have crashed so far
Currently NASA have three space shuttles Discovery, Atlantis and Endeavour.
No new space shuttles are being built at this time.
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.
none.
There were six NASA Space Shuttles.
13
6
5 different space shuttles have been launched on 129 missions.
119
5 NASA Shuttles have been into space. Of those 5 shuttles, 2 were unfortunately destroyed. There has been a total of 135 Space missions using the space shuttle between the years 1980 and 2011 :)
NASA space shuttles