That’s true, though I suspect in that case it would be a known object with ample evidence (a la Rendezvous With Rama) or undetected.
It’s definitely possible to imagine a scenario where a handful of people or “the government” somehow witnessed the only fleeting evidence of its existence in our atmosphere, but it still seems exceedingly unlikely.
It’s definitely possible to imagine a scenario where a handful of people or “the government” somehow witnessed the only fleeting evidence of its existence in our atmosphere, but it still seems exceedingly unlikely.