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 Shuttle Columbia a salute, a celebration rather than just concentrating on a few moments of tragedy, but instead the bigger picture of these brave people's lives." The graphic novel "Orbiter" by Warren Ellis and Colleen Doran was dedicated to the "lives, memories and legacies of the seven astronauts lost on space shuttle "Columbia" during mission STS-107." Laurel Clark's wake up call on STS – 107 was Runrig's "Running to the Light". Laurel took "The Stamping Ground" CD into space with her and when the Shuttle exploded the CD was found back on Earth, and presented to the band. "Somewhere", the final track