
Space Technology Experiments, or STEX, also known as NRO Launch 8 or NROL-8, was an experimental NRO satellite built by Lockheed Martin. It was launched on October 3, 1998. One of the experiments was ATEx (Advanced Tether Experiment), which was deployed on 22. January 1999, and subsequently jettisoned. ...
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http://en.wikipedia.org/wiki/STEX
(Space Technology Experiments) A National Reconnaissance Office satellite that, for the most part, successfully tested over two dozen advanced technology subsystems. Among STEX`s main equipment were Hall Effect electric thrusters derived from Russian technology, experimenta...
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http://www.daviddarling.info/encyclopedia/S/STEX.html
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