Are there 3-4 in a row? Starlink sattelites.

Mom, I need a flowchart.

Sorry honey, we're all out, but I think there's a btree in the pantry.

So what if it is the ISS but nobody is waving? How are we supposed to know?

They're missing a lot of items here like missiles, ufos, and wind mills.

If it's foggy it can also be reflections from ground-based stuff

first time ive encountered "bolide"

Where does gamma ray burst fit into this binary tree?

Comets don't move I guess

One important one: is it more than an hour or so after sundown, or less than an hour or so before sunup? If so, it's not a satellite, and is probably a plane.

Well that settles that then.

I once saw a slow moving light just above me. The town I live at covered in mist at the time. Turns out it was a small aircraft flying just a few meters above my apartment building. A few meters away from disaster.