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.
The proportion of people in the UK who feel dissatisfied with life has failed to improve since the pandemic despite the economic outlook improving, official figures show.
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Photograph: Simon Hill
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