From: lindblad@particle.kth.se   
      
   Has there or is there any infrasound microphones on Mars? If not, I   
   think there should be. Infrasound is no proplem for the low pressure   
   atmosphere and you can detect meteorites as well as seismic events.   
   Well, what about the latter? is there such activity?   
      
   Best regards // Thomas   
      
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