Moon Base (IMAGE) Spanish Foundation for Science and Technology Caption Future moon bases could be built with 3D printers that mix materials such as moon regolith, water and astronauts' urine Credit ESA, Foster and Partners Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.