1. 选择步长序列（如: n/2, n/4, ..., 1）
While the rocket is inside, technicians will remove and inspect suspected helium system components, update any faulty hardware, and perform other work. That includes replacing batteries in the flight termination system — the emergency system that can destroy the rocket if it strays off course — swapping out a seal on the line that feeds liquid oxygen into the rocket, refreshing items inside Orion, and giving the closeout crew more practice sealing the capsule.
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"The Moon is something that I've taken for granted. I've looked at it my whole life, but then you just glance at it and glance away," he said.
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