To be more accurate, the report of UFO sightings dropped significantly after the eighties. The other weird property is an increase in UFO sighting after the sec

To be more accurate, the report of UFO sightings dropped significantly after the eighties. The other weird property is an increase in UFO sighting after the second world war. Jean Jacques Velasco (GEPAN) suggested that it was correlated with nuclear explosions on earth. This is nonetheless suprizing because it would imply that they can make interstellar travels at a very high speed. We currently don't know how this is possible. Anyway, we have to be careful to not consider a behavior not matching our expectation as a reason to invalidate the phenomenon because it is our expectations that may be invalid.