The Shuttle Era
The Space Shuttle: The Reusable Workhorse Spacecraft
A New Space Transportation System
The concept of developing a reusable spacecraft had been under consideration by NASA prior to the end of the Apollo missions.
It became official in January 1972 when President Richard Nixon signed a bill authorizing a new Space Transportation System, which became more commonly known as the space shuttle. North American Rockwell began construction of the first space shuttle orbiter, Orbital Vehicle 101 (OV 101) in June 1974.