the length of the contrail, or at least this part of it is 12.3 miles.
Does anyone know what could have made this? Because the trail hasn't dissapated much at the far end means that it probably hasn't had time to,
therefore implying that the aircraft was travelling very fast.
another thing is the that there are three seperate parts to the trail meaning it was a three engined craft I think.
Does anyone know on average how fast commercial passenger jets
travel? At, say 300 mph, it wouldn't be at all unusual to have a 12,
20, or 30 mile long contrail if the air at that level was moist, would it?
I've seen them stretch halfway across the sky and last for more than
15 minutes over Lake Michigan to the East of Chicago.
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