NASA will launch the new TDRS-K communications satellite into orbit Wednesday (Jan. 30). But what exactly does the TDRS system do?
via LiveScience.com http://www.livescience.com/26690-nasa-communications-satellite-network-tdrs-k.html
via LiveScience.com http://www.livescience.com/26690-nasa-communications-satellite-network-tdrs-k.html
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