Austin Langton, a researcher at NASA's Kennedy Space Center in Florida, creates a fine spray of the regolith simulant BP-1, to perform testing with a Millimeter Wave Doppler Radar at the Granular Mechanics and Regolith Operations Lab on July 16, 2021. The testing occurred inside the "Big Bin," an enclosure at Swamp Works that holds 120 tons of regolith simulant. The testing at the Florida spaceport is part of a project to predict plume surface interaction effects on the Moon, with testing happening at Kennedy, and NASA's Marshal Space Flight Center and Glenn Research Center.