The great distances covered by visiting “aliens” may be ones of time rather than space, a recent book argues.
Unidentified flying objects (UFOs) have captured the public’s attention over the decades. As exoplanet detection is on the rise, why not consider that star-hopping visitors from afar might be buzzing through our friendly skies by taking an interstellar off-ramp to Earth?
On the other hand, could those piloting UFOs be us — our future progeny that have mastered the landscape of time and space? Perhaps those reports of people coming into contact with strange beings represent our distant human descendants, returning from the future to study us in their own evolutionary past… More about this article in the link below…
https://www.space.com/aliens-time-traveling-humans-ufo-hypothesis.html