NASA delays the launch of the shuttle for the fourth time on Friday, due to cracked valves the three valves are located in the shuttle engine compartment and route gaseous hydrogen into the fuel tank to keep it pressurized properly.. This will also delay the flight of the first Puerto Rican Astronaut. NASA hopes to be able to launch the space shuttle by mid- March. If they are unable to launch by then the shuttle will have to wait until April to Launch.
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