Underreported #ufo story. Skeptical pushback on this has been... muted? Hank Green sort of glosses over this in a recent video, I think the claim here is "nuclear test shrapnel that somehow gets into space and orbits and reflects sunlight?" I guess? As for "how could we have missed this?", take a look at the history of Project Blue Book. This was supposed to be a serious academic look at the phenomenon in the 70's, which according to its (academic) director, was compromised.