Observation and simulation of DART’s impact on Dimorphos. (A, B) This high-resolution image of Dimorphos and impact ejecta, at 178 seconds after DART’s impact, was taken by the Italian spacecraft LICIACube and is compared with the team's simulation (C) of the DART impact into a cohesionless (Y0= 0 Pa), rubble-pile target, at the equivalent time.