Inspectors find fourth crack in space shuttle

Washington (AFP) Nov 15, 2010 Inspectors have found a fourth crack in support beams on the external fuel tanks of the space shuttle Discovery, whose final flight was delayed because of a hydrogen leak, NASA said late Monday. The latest crack was found while technicians were removing foam while inspecting the support beams, which are called stringers, in the aftermath of the hydrogen leak, the space agency said. Two n

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