Spy Satellite's Mysterious On-Orbit Fade and a 1981 Spent Booster

According to Dr. Marco Langbroek (sattrackcam.blogspot.com) the satellite performs "what is known to observers as a disappearance trick". The U.S.'s Lacrosse 5 satellite has a tendency to suddenly lose brightness. Russian space junk is also observed.
credit : Dr. Marco Langbroek (sattrackcam.blogspot.com)
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