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.
Advanced Tether Experiment (ATEx) with partially deployed upper end-body
Payloads are separated by bullets ( · ), launches by pipes ( | ). Manned flights are indicated in bold text. Uncatalogued launch failures are listed in italics. Payloads deployed from other spacecraft are denoted in brackets.
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