Interesting Craig!
I was watching a show on Fox the other night that discussed the protective systems the ISS has in place to guard against meteorite damage. Rather than a single thick layer of aluminium or some other material, the ISS is made in rather thin aluminium sheet. This is then covered with a second thin sheet about 8 inches away which serves to take the hit. The meteorite goes straight through it of course, but as it does so it has already broken up and literally sprays out the back of this outer defensive layer - which then does minimal damage, if any, to the main skin. To help along, an additional layer of kevlar fibre is installed between the two skins. They are pretty safe inside it is said.
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