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Your whole post is testament to the just how bright the lights are on a modern jet aircraft. The illusion of hanging comes from you being able to see them from a long way away, and the fact that they are all following the same glide path. At 180 mph, it takes a plane 8 minutes to travel 24 miles, and I'm pretty sure you can see them that far out on a clear night. If you're near the runway, their relative angle to you stays pretty much the same until they are very close. So they appear to 'hang' until they are very close.
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