• Issue Archive for
  • Apr 14-20, 2010
  • Vol. 23, No. 5

News & Views

  • Is the GPS satellite system collapsing?

    One doesn't wish to make light of the situation. For most of us, failure of the Global Positioning System merely increases the likelihood we'll get lost in Pennsylvania. For the military and some emergency services, matters are more urgent. The satellites have limited life, typically seven to 10 years. There's no practical way to fix them once they break. Of the 59 GPS satellites launched to date, 31 are still operating. Of those 31, 17 are past their life expectancy -- the oldest was launched in 1990. So if I were planning a military incursion into yet another trackless third-world region, I'd have reason to think better of it.

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