The Japanese space probe Hayabusa2 wins the primacy of the first man-made crater on an asteroid. On April 25, 2019 the impact between a copper "bullet" and Ryugu, the celestial body object of the experiment.
The image in the post, taken by a probe camera, shows the effects of the impact on the surface (source: University of Kobe).
The images are quite clear despite the shooting distance: almost two kilometers. We are far from the catastrophic (for a space stone) effects of nuclear explosions like those of films, but knowing that we can hit and "affect" an asteroid is a good sign.
We hope that this ability will not serve in the future!