What key element replaces traditional soil for rooting plants within the ISS growing hardware?

Answer

Growth pillows containing a substrate like baked clay aggregate.

Plants are rooted in growth pillows, which are self-contained packets that hold a substrate, often baked clay aggregate, and a slow-release fertilizer.

What key element replaces traditional soil for rooting plants within the ISS growing hardware?

#Videos

Space in 4K - First Lettuce Grown and Eaten in Space - YouTube

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