Space shuttle Discovery's hydrogen gas connector, seen connected to the external tank, lower right, developed a potentially dangerous hydrogen gas leak which halted the launch countdown, Friday Nov. ... more 
Space shuttle Discovery's hydrogen gas connector, seen connected to the external tank, lower right, developed a potentially dangerous hydrogen gas leak which halted the launch countdown, Friday Nov. 5, 2010. Space shuttle Discovery's final voyage was postponed Friday until the end of the month so NASA can fix a fuel leak. less 
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Associated Press | Photo By Chris O'Meara
Sun, Nov 7, 2010 1:39 PM EST