NASA says all systems are go for a July 11 liftoff to the International Space Station but predicted showers and thunderstorms may postpone the 16-day mission to deliver the final permanent components of Japan’s Kibo laboratory complex. Forecasters predict only a 40 percent chance for Endeavour to hit the launch window.
– Grounded twice in June by a potentially dangerous launch pad hydrogen leak,
the space shuttle Endeavour’s third attempt to lift off for the International
Space Station is threatened by a far more mundane but equally lethal issue: bad
weather.

Liftoff is scheduled for July 11 at 7:39 p.m. EDT,
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