While technically a UFO refers to any unidentifiedflyingobject, in modern popular culture the term UFOhas generally become synonymous with alien spacecraft; however, the term ETV (ExtraTerrestrial Vehicle) is sometimes used to separate this explanation of UFOs from totally earthbound explanations.
Unexplained aerial observations have been reported throughout history. Some were undoubtedly astronomical in nature: comets, bright meteors, one or more planets that can be seen with the naked eye, or atmospheric optical phenomena such as lenticular clouds. But sometimes, some people say that they actually see them… Even better, they have the evidence!
As Architecture of Life we made a collection of UFO photos regarding to this World UFO Day – 2nd of July 2012! Hope you’ll all like it!
We want to believe!
Source: UFO Casebook