Shuttle Endeavour has been cleared for fuel-loading operations after a lightning analysis turned up no damage to shuttle electrical systems.
Engineers will begin pumping more than 500,000 gallons of liquid oxygen and liquid hydrogen into the shuttle's 15-story external tank at 9:48 a.m.
The weather forecast calls for a 70-percent chance that conditions will be acceptable for launch at 7:13 p.m. -- the middle of a 10-minute window to set sail for the International Space Station.
Seven astronauts aim to deliver the third and final section of the Japanese Kibo science research facility to the orbiting outpost.
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NASA scrapped a launch attempt Saturday to give engineers more time to complete an analysis of potential shuttle electrical system damage that might have been done by 11 bolts of lightning that struck within 1,800 feet of Endeavour during a severe thunderstorm Friday afternoon.
The spaceship itself was not struck. But seven of the bolts hit the lightning masts that tops the 36-story launch tower at pad 39A, and two of those strikes created enough voltage to trigger an exhaustive analysis of shuttle systems.
Space news and analysis from Kennedy Space Center and Cape Canaveral 
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