Helium is used to pressurize tanks and help push fuel into the engines. Without proper helium flow, the rocket cannot safely fly. Because the upper stage is hard to reach at the launchpad, NASA rolled the stacked rocket back into the Vehicle Assembly Building, the sky-scraping hangar where it was originally put together.
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但 Lambert 的判断是，这些能力恰恰也是最难通过蒸馏获得的。，这一点在Safew下载中也有详细论述
Foreign Investment Surges to Canada’s Strongest Level Since 2007
4. Which metrics should I be looking at?