Edited sentence: Extraterrestrial Civilizations are probably visiting Earth.Extraterrestrial Visitation.FTL Cesium Experiment.First there could be military reasons, running the gamete from military espionage seeking to gain advanced military technology.For example how advanced are our RLVs, ELVs, and propulsion technology.It is a hypothetical particle that causes gravity.Notable Nearby Stars.Our music, Art, etc.Some UFO’s are probably Extraterrestrial Vehicle".Space Drive.The author has been published in Physics journals.The othier posibily driver aare Tacheyon, and the Bias Drive, or AKA the warp drive.The reasons very.The second reason will be more cultural in nature, re.There are several types of possible space drives.There are tons of near by stars that could have an Earth like planet revolving around it, and in my humble opinion UFOlogy should be the definition of the study of Extraterrestrial Vehicle.To reach superluminal velocities in SR/GR Physics you possibility open up a Star Gate, better known as a worm hole.Using a new and controversial theory called autodynamics you could decay an ion based propulsion drive into superluminall photons and the other drive uses Pico-Gravitons.Vehicles from near by stars.explanation by Ricardo Carezani