How can creating a crewed capsule be so hard?
(finance.yahoo.com)
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Because every part of the structure must be just right. One little asteroid can puncture a fist sized hole and suck all the air out in one go amongst other problems The structure HAS to be able to withstand all layers of the atmosphere departing and reentry. Reentry is the toughest challenge. Every nut and bolt has to be inspected very thoroughly before ever being allowed on that launchpad.