The NASA DART spacecraft that rammed into asteroid Didymos's moonlet Dimorphos on Sep 26, 2022, not only created a long tail of fine particles, it also ejected dozens of large boulders from its surface.
The Hubble space telescope imaged 37 such boulders in Dec 2022, ranging in size from 1 m to 6.7 m, which are drifting away from Dimorphos at ~1 km per hour. The total mass in these boulders is about 0.1% that of Dimorphos.
