Astronaut pee could help build moon bases
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Scientists say a new kind of concrete could be used on the Moon. It is from moon dust and urine from astronauts. A chemical in human urine helps things stick together. Scientists could use 3D printers to make the material. Space agencies could start using this material to make buildings for a moon base. NASA, the European Space Agency (ESA) and the China National Space Administration are all interested in building research stations on the Moon.
Astronaut pee and moon dust could save money. It costs $10,000 to take 0.45kg of materials to the Moon. The urine and moon dust would be cheaper. A scientist said the urine of the people living on moon bases could be used. She added: "The actual water in the urine could be used for the mixture, together with [water] that can be obtained on the Moon." Scientists say they need to do more tests to find the best building material.
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