"Future Humans and the UFOs" presents the possibility, backed with physics and over-looked evidence, that UFO occupants are time traveling humans. It may be that extraterrestrials visit Earth as well, but we have missed a huge piece of the UFO puzzle. In 1947, when Kenneth Arnold first saw flying saucers, it was assumed occupants must be ETs from distant star systems because, "traveling back in time is impossible." However, Einstein never said time...