KENNEDY SPACE CENTER, Fla.--The shuttle Discovery's planned launch early Wednesday on a space station resupply mission was called off during fueling Tuesday when a valve in a liquid hydrogen feedline ...

NASA called off the launch of space shuttle Discovery for a second time Tuesday after a critical fuel valve failed to work properly. Launch officials halted the countdown midway through the fueling ...

CAPE CANAVERAL, Fla. (AP) -- NASA called off the launch of space shuttle Discovery on Tuesday, the second day in a row the liftoff was scrubbed, this time because of a bad fuel valve. Launch officials ...

KENNEDY SPACE CENTER, Fla.--NASA managers Thursday ordered another delay for launch of the shuttle Discovery, from early Friday morning to late Friday night, to give engineers additional time to make ...