The Encyclopedia Britannica, 15th edition, devotes 20,000 words to the person of Jesus Christ and never once hints that He didn't exist.

With the near-death or clinical near-death phenomenon some people who are brought back from 'death' have reported being alive the entire time they were 'dead.' This phenomenon occurs among people with a wide diversity of religious belief and no religious belief at all - from atheists to Zen Buddhists.

But the UFO phenomenon simply does not behave like extraterrestrial visitors. It actually molds itself in order to fit a given culture.