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Originally posted by smurfy
Probably not much point in replying to the OP who is banned, and who had an earlier thread with the exact same title which has gone to room 101 ?? But anyway, to take this the thread as constituted, there is no reason to say solely, "just a secret aircraft" since there are other scenarios around, and just as lucid, to say that these secret craft are are a product of back engineering from the result of captured remains of ET craft. I suppose we are really spoilt for choice as to the means of propulsion and flight. Jets, Koanda effect and The lifter, but the big one is anti-gravity, at least on planet Earth. Space is an altogether different non-energy state you would think, except that puny humans have imputed raw energy into our local space, and no matter what, our local space will be different than it was before.