Qualifying and quantifying impactors (was Shooting down meteoroids)

> One should expect a meteor the weight of a
> tennis ball to come along about every three years.
> Even if it did penetrate the hull, such a puncture
> would mean a routine, minor repair, not an emergency.
> ===========================
>

Even so, don't discount the fact that we've already raised an entire
generation of Nintendo-trained zealots who only need a controller and a
box of Twinkies to keep us safe from any potentially dangerous
rocky 'space invaders'...

Doesn't even have to be a job - it could be a reward for those who
finish their homework... :-)