Thanks, codeflo. I calculated similar numbers and only gave a very crude approximation but I will take your word for it. Obviously, with the thermal distribut

Thanks, codeflo. I calculated similar numbers and only gave a very crude approximation but I will take your word for it. Obviously, with the thermal distribution according to altitude it's a poorly defined problem. Most intuitively, this means that when looking at some object on earth ~5 miles away, you are looking through roughly as much air as you are when looking at any given planet or star above you in the sky. I think this is an interesting comparison.