That’s narrower than a Boeing 737’s wingspan, and when you look at planes leaving a trail behind them, you can often see the trail fan out much wider than the plane.

Not sure how wide that would be, but the length has to be factored in too, which begs the question, how wide and long is a piece of string/cloud?

On the ground looking up the sense of scale falls apart a bit.

There are a lot of them.