Re: Hit the US?
> Yes! The best thing to do to avoid a big piece of metal hitting people is to blow it up, so that lots of smaller pieces of metal can hit them instead.
The theory is: Small bits are likely to be vaporized by the heat of re-entry, and/or slow down more since they have a big area-to-mass ratio. Big bits of metal might survive re-entry, with just the outer layer melted off, and can hit at high speed since they have a small area-to-mass ratio.
However, I'm not sure about this cunning plan...