You should be able to make some kind of primitive parachute. Not that makes a soft landing, but where it only crashes with moderate speed.
You do touch on a very important issue: Anyone who can move an asteroid to Earth can also extinguish at least a city at will. I foresee this business being very heavily regulated by the big military powers.
You do touch on a very important issue: Anyone who can move an asteroid to Earth can also extinguish at least a city at will. I foresee this business being very heavily regulated by the big military powers.