The shuttle-or spacetransportationsystem, as the assemblage is known-is basic to future developments in space.
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Being able to refuel on orbit is key to an agile and fully reusable spacetransportationsystem.
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Jan. 5, 1972 - President Richard Nixon signs a bill authorizing $5.5 billion to develop a reusable winged spacetransportationsystem called the space shuttle.
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It's called the SpaceTransportationSystem, but it quickly became known as the Space Shuttle.
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NASA convinced Congress to designate the space shuttle as the national SpaceTransportationSystem (STS).