Radio noise is observed by spacecraft in the plasmatrough (the cavity of low-density plasma between the Earth’s plasmasphere and the Earth’s magnetosheath)

February 27, 2013 § Leave a comment


If you have fewer than 10 service providers at your international frontier, your country is probably exposed to some significant risk of Internet disconnection. Ten providers also seems to be the threshold below which one finds significant additional risks from infrastructure sharing — there may be a single cable, or a single physical-layer provider who actually owns most of the infrastructure on which the various providers offer their services. In this category, we place 72 countries, including Oman, Benin, Botswana, Rwanda, Pakistan, Kyrgyzstan, Uganda, Armenia, and Iran. Disconnection wouldn’t be trivial, but it wouldn’t be all that difficult. Egypt falls into this category as well; it took the Mubarak government several days to hunt down and kill the last connections, but in the end, the blackout succeeded.  read more

ART: Michelangelo

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