That honour went, of course, to Neil Armstrong and Buzz Aldrin.
"Your heart is having an easy time, your muscles and bones are having an easy time. You're floating around the space station in this wonderful zero gravity environment.
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Food waste is instead taken through a process called anaerobic digestion to create biomethane.
Nature, Published online: 24 February 2026; doi:10.1038/s41586-026-10293-1