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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.

Prior to the 2011 ruling, various court cases were brought by several US states against alleged corporate polluters seeking compensation for that pollution.

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