helium

Explainer-What is helium and why is it used in rockets? By Reuters

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By Nivedita Bhattacharjee BENGALURU (Reuters) – Two NASA astronauts aboard Boeing (NYSE:)’s Starliner will stay on the International Space Station for months because of a faulty propulsion system whose problems included helium leaks. Back on Earth, SpaceX’s Polaris (NYSE:) Dawn mission has been delayed because of helium issues on ground…