RASSOR Excavation Testing Swamp Works

NASA’s RASSOR (Regolith Advanced Surface Systems Operations Robot) manipulates simulated regolith, or lunar dust found on the Moon’s surface, to create a three-foot berm during a site preparation test inside of the Granular Mechanics and Regolith Operations Lab at the agency’s Kennedy Space Center in Florida on Tuesday, June 3, 2025. The opposing motion of the bucket drums helps RASSOR grip the surface in low-gravity environments like the Moon or Mars. With this unique capability, RASSOR can traverse the rough surface to dig, load, haul, and dump regolith that could be used in construction or broken down into hydrogen, oxygen, or water, resources critical for sustaining human presence. RASSOR represents an earlier generation technology that informed the development of NASA’s IPEx (In-Situ Resource Utilization Pilot Excavator), serving as a precursor and foundational platform for the advanced excavation systems and autonomous capabilities now being demonstrated by this Moon-mining robot.