Even in this day and age when a man is already capable of venturing out into space and peer into the neighboring planets, we are still unable to get a hold of any solid evidence that would prove the existence of other-worldly beings. But throughout the ages, even as far back as thousands of years, alleged encounters with UFOs carrying beings from out of this world persisted. What are they? Who are they? Where did they come from? And why do they remain elusive and unexplained? Unfortunately, it may take a while for mankind to answer these questions. Or we may never, ever.
From the time of the Roman Empire to most recently, here are some of the UFO encounters that will have you thinking about our existence and place in the universe.