This is a cracking good read. I bought it on Saturday and finished it Sunday.
But I was surprised to find it made me less sanguine about Orion than I had been. There are, apparently, some fundamental unsolved problems with the concept. When I say "fundamental", I mean it in the engineering sense, not in the sense of something contravening physical laws. For one thing, there is the question of excessive pusher-plate ablation -- which would have been settled if that one underground test had been approved. Then there are those shock absorbers! But fallout remains the most vexing problem. I did not know that any produced within Earth's magnetosphere eventually makes it to the planet's surface. The book is well-written, thoroughly researched, and makes few mistakes. I recommend it highly. Chris _______________________________________________ ERPS-list mailing list [EMAIL PROTECTED] http://lists.erps.org/mailman/listinfo/erps-list
