Jesus Christ the autism.

Impenetrable to fast-moving ELECTRONS. Holy shit the autism in this thread.

Let me try this: Electrons will move through, but the information carried in electron waves is toast. I didn't build the shuttle. I can't tell you about it's equipment, but simple shielding would end this. The Faraday cage is a cool thing. How the human body would do is another question.

Well, I'm not a mind reader, so I'm not sure "what you think it says", but yeah. I would suspect that very little EM radiation -- at some frequencies -- gets through the Van Allen belts -- directly. Would it constitute something like a standing EMP? Probably not. It might be EMP-like if you went through it very quickly.

There's a big difference between a bonded electron and a traveling wave. That's the rub. It's not "impenetrable" in "brick wall" sense, but "impenetrable" in "my wifi won't reach the kitchen if the microwave is on" sense.

Interesting, thanks. Hopefully someone can explain this.

Impenetrable barrier to radiation (mostly I guess) but not rockets. Or am I still missing something?

Can you help me out and explain a little bit more?