Shuttle Discovery blasts off to space station
Space shuttle Discovery launched just before midnight Friday on a mission to the international space station
Discovery's liftoff, originally set for Tuesday, had been postponed three times -- first for bad weather, and twice more while mission managers checked out indications of a faulty valve.
Discovery is headed for the international space station with a crew of seven astronauts, including one from Mexico and another from Sweden. One of those seven, Nicole Stott, will remain on the station as a flight engineer, while astronaut Timothy Kopra is to return home aboard the shuttle.
