6. Enterprise, Columbia, Challenger, Discovery, Atlantis, Endeavour.
No new space shuttles are being built at this time.
5 Space Shuttle orbiters have been built. 3 remain in service.
5 different space shuttles have been launched on 129 missions.
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 :)
Six air-worthy shuttles have been built; the first orbiter, Enterprise, was not built for space flight, and was used only for testing purposes. Five space-worthy orbiters were built: Columbia, Challenger, Discovery, Atlantis, and Endeavour. Challengerdisintegrated 73 seconds after launch in 1986, and Endeavourwas built as a replacement. Columbia broke apart during re-entry in 2003.
No new space shuttles are being built at this time.
5 Space Shuttle orbiters have been built. 3 remain in service.
5 different space shuttles have been launched on 129 missions.
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 :)
Six air-worthy shuttles have been built; the first orbiter, Enterprise, was not built for space flight, and was used only for testing purposes. Five space-worthy orbiters were built: Columbia, Challenger, Discovery, Atlantis, and Endeavour. Challengerdisintegrated 73 seconds after launch in 1986, and Endeavourwas built as a replacement. Columbia broke apart during re-entry in 2003.
5 were built Columbia Discovery Atlantis Endeavor Challenger
5. Columbia, Challenger, Discovery, Atlantis and Endeavour.
Five Space Shuttles were built. Challenger, Columbia, Atlantis, Discovery and Endeavor. Of the five built, three remain. Atlantis, Discovery and Endeavor
Challenger, Columbia
3 space shuttles have crashed so far
Currently NASA have three space shuttles Discovery, Atlantis and Endeavour.
They are in the order in which they flew: Colombia Challenger Discovery Atlantis Endeavour So your answer would be 5.