Tuesday, November 25, 2008

Black Zones

NASA's Wayne Hale offers a fascinating discussion of the "black zones" in crewed spaceflight - the periods during flight when saving the crew from an emergency is impossible, and how the various types of vehicles we've flown over the years compare. (The original blog postings can be found at NASA Blogs, but SpaceRef has performed a useful service by collecting the multiple segments of the "Black Zones" piece into a single page.)

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