The Space Launch System rocket, the most powerful ever built by NASA, will attempt to send the capsule around the moon and back.
CAPE CANAVERAL, Fla. — NASA will try on Saturday, again, to launch its new moon rocket on a test flight after engine trouble halted the first countdown this week.
The 322-foot rocket — the most powerful ever built by NASA — remains on its pad at Kennedy Space Center with an empty crew capsule on top. Proceeding toward a Saturday launch will provide additional insight, even if the problem reappears and the countdown is halted again, said NASA's rocket program manager, John Honeycutt. That's better"than us sitting around scratching our heads, was it good enough or not."
During Monday's launch attempt, readings showed that one of the four main engines in the rocket's core stage could not be chilled sufficiently prior to the planned ignition at liftoff. It appeared to be as much as 40 degrees Fahrenheit warmer than the desired minus-420 degrees Fahrenheit , the temperature of the hydrogen fuel, according to Honeycutt. The three other engines came up just a little short.
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