For more than 20 years after the flying saucer frenzy of the late 1940s the Extraterrestrial Hypothesis (ETH) remained the default explanation for UFOs. Jacques Vallée, a French astronomer and ufologist, was the first to challenge the ETH, and he followed the UFO Sighting data towards some unorthodox and fascinating conclusions.
The extraterrestrial hypothesis (ETH) proposes that some unidentified flying objects (UFOs) are best explained as being physical spacecraft occupied by extraterrestrial life or non-human aliens from other planets visiting Earth. As yet, no evidence exists to support this hypothesis. READ MORE about Jacques Vallee: http://www.jacquesvallee.net FindingUFO