ИСТИНА

A unique impact flash near the lunar terminator accompanying by appearance of exospheric dust clouds was detected in the first time. A possibility of imaging the impact-produced dust clouds on the Moon using Earth-based observations is proved. Impact-produced dust ejecta are divided into two classes with different kinematic properties: the large fast cloud (~3 km/s) and the small slow cloud (~0.1 km/s). Further observations are required for detailed studies of impact-produced dust clouds in the lunar exosphere. Theoretical modeling of mass, size, and velocity distributions of dust particles excavated to the lunar exosphere upon detected impact is planned.