Astronauts may use their own pee to construct future moon habitats
NASA and other space agencies don't just want to visit the Moon but they want to live on the lunar surface. They have found a way to build future shelters by mixing urine and local soil. Scientists mixed urea with lunar material to create a type of moon concrete and the team used a 3D printer to create cylinders of material made from moon regolith substitute mixed with urea. The results were promising.