NASA’s Artemis II mission launched yesterday (1 April) without incident, marking a return to crewed lunar flight for the first time in more than half a century.
Behind the headlines, however, sits a quieter story of cryogenic engineering, where supercooled liquid hydrogen and liquid oxygen power the entire system.
At liftoff, NASA’s Space Launch System (SLS) rocket was loaded with more than 700,000 gallons of cryogenic propellant, primarily liquid hydrogen and liquid oxygen stored at temperatures as low as -253°C.
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