On lengthy space flights, fuel shortages may force astronauts to cut their missions short. But as long as they are aloft, there is little chance that there will ever be a shortage of one constant byproduct of manned-space missions—human waste. During a three-month flight, for example, a crew of three will produce approximately a quarter-ton of solid wastes. What to do with it? Seattle's Rocket Research Corp. offers a practical answer: process the waste and use it as a source of rocket fuel.
To test their theory, Rocket Research scientists mixed together...
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