The launch of the U.S. space shuttle Endeavour has been delayed for a third time, until at least May 16, NASA announced Friday. "NASA managers met Friday afternoon and determined space shuttle Endeavour will launch no earlier than Monday, May 16 at 8:56 am EDT," the space agency said. Technicians will continue to repair and retest the electric circuitry that caused NASA to postpone the launch on April 29 hours before liftoff, it said. It is supposed to be the U.S. space program's second-to-last shuttle flight to the International Space Station, followed by Atlantis in June. After that, the 30-year-old U.S. shuttle program will end. The problem has been traced to a power problem in the aft load control assembly-2 (ALCA-2), a box of switches that control electrical flow to heaters that keep fuel lines from freezing in orbit.
