Scouring the surface: Ejecta dynamics and the LCROSS impact event

► Experimental impact study combining high-speed and LCROSS instruments. ► LCROSS ejecta evolution essential to interpretation of regolith/volatiles. ► Unique impact conditions complicated interpretation based on canonical models. ► Centaur impact created two ejecta components which excavated to different depths. ► Extrapolations from experiments match flight images and spectrometer response.