Shuttle launch delayed again until Thursday

CAPE CANAVERAL, Fla. (AP) -- The final launch of space shuttle Discovery has been delayed again. NASA decided early Tuesday evening to bump the liftoff until at least Thursday. The decision came less than 24 hours before the scheduled launch time.

An electrical problem cropped up aboard Discovery early Tuesday. A controller for one of the shuttle's main engines was sluggish, but engineers got it working. Voltage irregularities then were noted. Mission managers said they needed more time to figure out what's wrong.

NASA has until Sunday - possibly Monday - to launch Discovery to the International Space Station. Otherwise, it will have to wait until December because of unacceptable sun angles.

Gas leaks had already forced a two-day postponement.