NASA’s DART spacecraft crashes into asteroid in defense test
— Read on phys.org/news/2022-09-bam-nasa-spacecraft-asteroid-defense.html

(Asteroid Didymos is roughly 2,500 feet (780 meters) in diameter; Dimorphos is about 525 feet (160 meters) in length.)

Historic words for a historic moment for humanity: – As far as we can tell, our first planetary defense test was a success,” Adams later told a news conference, the room filling with applause. “I think Earthlings should sleep better. Definitely, I will.” ( from this article) .