Deep Impact Crater

Photos snapped by NASA's Stardust probe have indeed imaged the crater made by the Deep Impact penetrator in 2005. The collision site on the head of Comet Tempel 1 is marked by a crater 492 feet across. Unlike craters on larger bodies, where ejecta from a collision spreads beyond the crater walls onto the surrounding countryside, the debris in this case seems to have gone straight up, and largely come right back down, partially refilling the crater.

Stardust's closest approach to Tempel 1 was 110 miles, but it still suffered a pretty good pounding from debris flying around the comet-- perhaps some of that debris being associated with the Deep Impact strike. The probe was hit as many as 20 times, with some of those particles driving through the outer layer of the spacraft.