40 Years Ago: Space Shuttle Enterprise rolls to the Pad - NASA
The Shuttle system consisted of three primary components that worked together for launch: The Space Shuttle
: A prototype used for atmospheric flight tests; it never flew in space but is currently on display at the Intrepid Sea, Air & Space Museum. How It Worked 40 Years Ago: Space Shuttle Enterprise rolls to
Five flight-worthy orbiters were constructed for the program: The Space Shuttle