I’ve never seen anything in the sky that wasn’t explainable in terrestrial terms.
I saw something in the Kansas summer night sky while still-fishing for catfish.
Pointed it out to my fishing buddy (no beer or anything like that with us that night) and agreed it wasn’t an airplane. It was too fast.
It didn’t really accelerate or slow down either, it just covered great distances in seconds. It was one of the few times in my life my chin was on my chest.