A team of engineers and researchers prepares a vacuum chamber in the Granular Mechanics and Regolith Operations (GMRO) lab inside NASA Kennedy Space Center’s Swamp Works for testing 3D printing, as part of the Relevant Environment Additive Construction Technology (REACT) project at the Florida spaceport on April 5, 2022. The project derives from NASA’s 2020 Announcement of Collaboration Opportunity, with AI SpaceFactory – an architectural and construction technology company and winner of NASA’s 3D Printed Habitat Challenge – collaborating with Kennedy teams to build 3D-printed test structures using a composite made from polymers and a regolith simulant in a vacuum chamber that mimics environmental conditions on the Moon.