There have been six shuttles, the first being the Space Shuttle Enterprise (OV-1). Although the Enterprise was never intended for use in for orbital missions, its primary use was as a test vehicle for in-atmosphere flight tests of the 747 aircraft "taxi" system that moved the shuttle from Edwards AFB or other alternate landing sites to Kennedy Space Center in those cases where the shuttle couldn't land at KSC. It was also used to test the shuttle's glide and landing capability.
The original 4 space-capable orbiters are: OV-099 - Challenger (originally STA-099) OV-102 - Columbia OV-103 - Discovery OV-104 - AtlantisShuttle Endeavour (OV-105) was built to replace Challenger. The easiest way to get pictures of each shuttle is from the main NASA or Kennedy Space Center websites at the links below. Each shuttle is listed by mission, and each mission has a complete record of low and hi-resolution pictures available for download by the public.
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