"DM" wrote

okay! This is clicking for me, even though I know it may just be another
way of saying "optical illusion". I read this page,

http://en.wikipedia.org/wiki/Parallax

and the concept makes sense to me (not to imply that most everyone
else's explanation didn't).

Debbie

Another thing to keep in mind, is that airplanes work by the laws of
physics. An airplane, be it large or small, can not have zero airspeed for
even an instant, or it will stop flying, and fall out of the air. Given
enough altitude, it can dive, regain airspeed, and start flying again, but
you would have seen that happen, and you did not.

What remains, is the fact that the jet you saw did not stop, and what you
perceived was due to your observation being in error, in some manner.

Have a good one!
--
Jim in NC


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