WASHINGTON: The US space shuttle Discovery is on Wednesday to head to the International Space Station to complete an overhaul of the power-generating systems on the orbital outpost.
Weather permitting; Discovery will lift off from the Kennedy Space Center at Cape Canaveral, Florida, at about 9:18 pm (0118 GMT Thursday).
Discovery's seven astronauts, including Japan's Koichi Wakata, are to deliver the fourth and last pair of power-generating solar panels to the ISS.
The launch, originally set for February 12, had been delayed four times due to problems with control valves, which channel gaseous hydrogen from the shuttle's three main engines. Three of the valves were replaced with newer ones.
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