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Microgreens have become a superfood here on Earth, but their role goes far beyond that: they are also helping to define how we will feed ourselves in space. Their rapid growth, nutritional density, and ease of cultivation make them strategic allies for long-duration space missions.
Why is NASA betting on micro-sprouts?
Astronaut health has always been a priority on space missions. Microbrewing offers unique solutions:
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More nutrients in less space
They can contain up to 40% more nutrients than the adult plant. Broccoli, radish, and cabbage are rich in vitamin C, potassium, iron, and calcium, key nutrients for counteracting bone and muscle loss in microgravity, as well as strengthening the immune system. -
Fast and efficient
Ready in just 7 to 12 days, they allow for the production of fresh food while occupying very little surface area, something fundamental on the International Space Station (ISS), the Lunar Gateway, or future missions to Mars. . -
Psychological well-being
Caring for live plants in orbit helps astronauts relieve stress and maintain an emotional connection with Earth.
Growing crops in space: innovation in the face of microgravity
In the absence of gravity, cultivation requires new solutions:
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Hydroponic systems and mats made of natural fibers , such as hemp or expanded clay, to anchor the roots.
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Precise management of water and nutrients , preventing spills and ensuring balanced growth.
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LED lighting with specific spectra , which maximize photosynthesis and help plants to orient themselves.
The Veggie program and the future of space agriculture
For more than a decade, NASA's Veggie program has been researching how to grow fresh food in space. On the ISS, astronauts have already grown and tested microgreens, and before flights, these are studied in ground-based laboratories using microgravity simulators.
These advances not only prepare humanity to live beyond Earth, but also inspire sustainable agricultural practices here on Earth. With their high nutritional density, low environmental impact, and versatility, microgreens are not just a resource for space missions; they are a cornerstone of the nutrition of the future.
