Man Spots Secret US Military Spacecraft With Amateur Telescope
Briefly

He described how he came to capture imagery of Pentagon craft that nobody knows much about, using a telescope optimized to track satellites.
There's a chance that it could be a solar panel, although I think it's less likely due to the fact that the panel seems to be fixed.
USA 290's movements were also off, and unlike typical KH-11s, which are launched into Sun-synchronous orbits, USA 290 wasn't.
Read at Futurism
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