International Astronautical Federation





International Astronautical Federation

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Water_Supply

NASA’s International Space Station has very limited resources. This includes water. For astronauts there, water recycling is the only feasible option. Many people don’t realize it, but water is in limited supply on earth also. Only about three percent of the world is fresh water, and of that two percent is unavailable in polar ice caps, so only one percent of the world’s water is fit for human consumption.

International Astronautical Federation

Name and definition Robert Stirling was the inventor of the first practical example of a closed cycle air engine in 1816