I know every one on this list has pondered the "thermal effects" and also the shear impact of coming back through the atmosphere not to mention the tangible evidence i.e. meteorites and what happens to solid iron ect.So I think the following is relative to the list, I read an article recently where an argument was made that "the space shuttle missions weren't really doing enough science to justify human sacrifice". "They were basically just going up and down" 

I believe there is some truth this. I think there is alot of frustration within us all of not being able to get the space program moving faster I personally would really like to see us going to the moon even mars or then mars They say there's no logical reason for a man to go there but, we are human after all and must follow the frontier its are nature ands it how we survive  both socially and ecomicly. So here's my point , some day my friends we go to space and some day we come home and as we are traveling back through the atmosphere I will be so grateful to ones went through first The ones as they said in the article "they just went up and down" the ones I say did ultimate experiment, the ultimate science the science of  returning to earth and by their sacrifice we will learn and what we learn will provide safe passage  for us, the travelers of the future .
Thanks John

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