Quote:
Originally Posted by ourkind
Carl Sagan famously said "extarordinary claims require extraordinary evidence".
Unfortunately this is something individuals and groups claiming to have seen a UFO always fail to provide.
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Neil Degrasse Tyson also says "remember what the U in UFO stands for".
I'm intrigued though... Fighter aircraft at extreme altitude going afterburner wouldn't be audible on the ground and would shut down after a few seconds.