<p><BR/>Replying to:<BR/><DIV CLASS='Discussion_PostQuote'>Wouldn't it be cool if someone invented a space suit that did not take TWELVE HOURS to prep??? This is only slightly less than the boot-up time for Windows!!!!</p><p>Posted by asj2006</DIV></p><p><img src="http://sitelife.space.com/ver1.0/content/scripts/tinymce/plugins/emotions/images/smiley-laughing.gif" border="0" alt="Laughing" title="Laughing" /> </p><p>You'd be surprised how long it takes to prep for an EVA, even for Americans and Russians. I would also suspect that the 12 hour time includes a pure oxygen pre-breathe to purge nitrogen from their blood. Pure oxgyen environments are hazardous, so you don't want them in a spaceship. But that means breathing mostly nitrogen, which will wind up dissolved in your blood. That's okay as long as the pressure stays the same. During EVA, though, you're likely going to go down to 5 PSI so the suit will still be bendable, and that will be pure oxygen. If you have nitrogen in your blood, it will come out of solution and form bubbles. That's how you get the bends, the effects of which can be anywhere from excruciating to lethal. It takes a bit of time.</p><p>Also, this is a brand new suit design. It would be prudent to go slow getting it prepped for its first operational use. </p> <div class="Discussion_UserSignature"> <p> </p><p><font color="#666699"><em>"People assume that time is a strict progression of cause to effect, but actually from a non-linear, non-subjective viewpoint it's more like a big ball of wibbly wobbly . . . timey wimey . . . stuff."</em> -- The Tenth Doctor, "Blink"</font></p> </div>