CAPE CANAVERAL, Fla. (AP) - Two science teachers who have spent the past five years under NASA's tutelage are about to graduate with high-flying honors.
The space shuttle flight Wednesday night of Joseph Acaba and Richard Arnold II will mark the first time two former teachers have rocketed into space together.
The flight on shuttle Discovery was delayed a month because of concerns about hydrogen gas valves in the engine compartment. After
extra tests, NASA deemed the spacecraft safe to fly.
Discovery's astronauts arrived at the launch site Sunday afternoon and thanked everyone who helped resolve the valve issue. The countdown clocks began ticking four hours later.
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