After 60 years of investigation into several million UFO reports, researchers have concluded that 90 to 99 percent of all UFO sightings are, in fact, IFOs. Identifiable flying objects include natural phenomena, human-made (often experimental) aircraft, pranksters' hoaxes, and psychological phenomena. Of the remaining 1 to 10 percent, scientists have found no credible evidence (such as crash debris or physical artifacts) indicating that these sightings involve physical craft, with or without beings on board.
The publication of the Condon Report on Project Blue Book in 1969 did little, if anything, to quell public speculation about alien visitors, which continues unabated. However, subsequent rigorous interdisciplinary studies yave yielded sufficient data to demonstrate that at least some of the residual (still unidentified 1-10 percent) UFOs are real and yet not tangible, or physical, in nature. They may be categorized as occult or nonphysical manifestations. (P. 59)
One thing I find really interesting is that, contrary to a carefuly cultivated stereotype, it is the theists and non-materialists who are the skeptics, while materialists indulge in theories that erase space and time, and multiply universes ad lib.
Younger astronomers less likely to believe than older ones?
