The astronauts aboard the International Space Station (ISS) have managed to successfully cultivate salad crop -- red romaine lettuce -- that is free of disease-causing microbes and safe to eat, and is at least as nutritious as Earth-grown plants.
source https://gadgets.ndtv.com/science/news/iss-astronauts-grow-earth-like-fresh-lettuce-in-space-2191691
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