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 Moon during the Apollo 11 mission. Whitson spoke to the president from space in April aboard the International Space Station and while flying back home after breaking the record for most time in space by a U.S. astronaut in September. Koch is a member of NASA's astronaut class of 2013. Space policy of the United States The space policy of the United States includes both the making of space policy through the legislative process, and the implementation of that policy in the civilian and military US space programs through regulatory agencies. The early history of United States space policy is