Aliens May Have Visited Earth
Aliens May Have Visited Earth: Extraterrestrial Life, UFOs, Alien Visitation Table of Contents Introduction The Quest for Extraterrestrial Life 2.1. The Search for Exoplanets 2.2. The Possibility of Life Beyond Earth 2.3. Fermi Paradox: Where Are They? Unidentified Flying Objects (UFOs) 3.1. Historical UFO Sightings 3.2. Government Investigations 3.3. Declassified UFO Reports Alien Visitation Theories 4.1. Extraterrestrial Visitation Evidence 4.2. Ancient Alien Theories…