Newslink: Japan Just Shot a Fake Asteroid with a Space Bullet … for Science

Say you need to prepare to shoot bullets into an asteroid and suck up the debris kicked up from the blast, then tuck it away for safekeeping. There's no better way than to shoot bullets into a fake asteroid here on Earth and watch what happens in slow motion.

https://www.space.com/hayabusa2-team-shoots-fake-asteroid-practice-ryugu.html