Space Shuttle gliding and landing; it was originally intended to be outfitted for orbital operations after the test program, but it was found more economical to upgrade the structural test article STA-099 into orbiter "Challenger" (OV-099). An additional test article, dubbed "Pathfinder" (OV-098), was built for form and fit tests, and is on display at the Alabama Space and Rocket Center in Huntsville, AL. "Challenger" disintegrated 73 seconds after launch in 1986, and "Endeavour" was built as a replacement from structural spare components. Building "Endeavour" cost about US$1.7 billion. "Columbia" broke apart over Texas during re-entry in 2003. A Space Shuttle launch
Space policy of the United States United States, and submitted for approval and establishment of funding to the legislative process of the United States Congress. Space advocacy organizations may provide advice to the government and lobby for space goals. These include advocacy groups such as the Space Science Institute, National Space Society, and the Space Generation Advisory Council, the last of which among other things runs the annual Yuri's Night event; learned societies such as the American Astronomical Society and the American Astronautical Society; and policy organizations such as the National Academies. In drafting space policy, the President consults with the National Aeronautics and Space Administration