A powerful Apollo-era crawler-transporter slowly carried the shuttle Discovery from the Vehicle Assembly Building to launch complex 39A today for work to ready the ship for blastoff Oct. 23 on a complex space station assembly mission. The three-mile trip began around 6:47 a.m. and the orbiter's mobile launch platform was "hard down" at the pad by around 1:15 p.m. NASA had hoped to move the ship to the pad last week, but the trip was delayed after engineers discovered a hydraulic leak in the shuttle's right main landing gear strut. Four seals in the strut mechanism were replaced, clearing the...