CAPE CANAVERAL, Fla. — NASA took another crack at fueling its giant moon rocket Thursday after leaks halted the initial dress rehearsal and delayed the first lunar trip by astronauts in more than half a century. For the second time this month, launch teams pumped more than 700,000 gallons (2.6 million liters) of supercold fuel into the rocket atop its launch pad. They counted all the way down to the half-minute mark as planned, then turned back the clocks to run through the final 10 minutes