The National Aeronautics and Space Administration (NASA) is researching several methods for food production in space and on other planets, including aquaponics. Perpetual production is critical when few resources are available, and closed-system methods are ideal for their efficiency. Aquaponics is particularly appealing because it offers high productivity of plants and fish. Researchers are working to reduce inputs to the system and maximize production in a zero-gravity environment.

Here are some links for more reading on the subject:

NASA’s Mars mission could be powered by fish

Farming on Mars: What the first settlers will need to know

 

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