Challenger, Columbia and the Nature of Calamity CLYDE HABERMAN Over 30 years, there were 135 American shuttle launches and returns, and 133 were successes. Perhaps inevitably, it is the other two that people remember best. June 2, 2014 at 4:00AM http://nyti.ms/1knMyB9 The New York Times U.S. Columbia (Space Shuttle), Challenger (Space Shuttle), Space and Astronomy

By CLYDE HABERMAN via NYT / Eethg. Corps. Inc. / Terrence Herschel G. U.S. http://nyti.ms/1knMyB9 Challenger, Columbia and the Nature of Calamity June 2, 2014 at 4:00AM The New York Times