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Monday, November 13, 2006

Links for 2006-11-13

  • A new study suggests that space elevators may have a problem for human passengers: the Van Allen radiation belts. Not only is the radiation considerably stronger at the equator than elsewhere but, more importantly, anticipated space elevator speeds (think high-speed train, just vertical) are about a hundreth of rocket speeds, thus increasing single-trip radiation exposure to potentially lethal levels.