The NASA DART mission to send a spacecraft to deliberately smash into an asteroid in order to find out if it could deflect it’s orbit has certainly provided some excitement. There was definitely a flash of light from the asteroid when the crash occurred and as a result a debris trail 6000 miles in length can currently be seen. It is expected the tail will get even bigger in the next few weeks and months and dissipate over a wider area. See https://phys.org/news/2022-10-smacked-asteroid-debris-trail-miles.html …
Over at https://phys.org/news/2022-09-probable-impact-crater-spain.html … we have the discovery of an impact crater in Spain, provisionally dated around 8 million years ago. It is 4km in diameter and is surrounded by a larger structure. 20 km across. This was caused by the sediments caught up collapsing.