What Are UFOs and Where Do They Come From
UFO Theories
Extraterrestrial Hypothesis

Conspiracy Theory

Portals

As of 2012 portals have moved from theoretical to reality. A NASA-sponsored researcher at the University of Iowa has developed a way for spacecraft to hunt down hidden magnetic portals in the vicinity of Earth. These portals link the magnetic field of our planet to that of the sun.The existence of portals would go a long way in explaining the erratic and very short duration of many UFO sightings. Could it be possible that UFOs are only seen as they "uncloak" just prior to entering or exiting a portal. Since we know that portals exist between planet earth and the sun than it only stands to reason that portals would exist between galaxies. This would explain why we have not found anybody living in our immediate neighborhood. Maybe there is an abundance of life in the universe but not in our Milky Way. It could be they are traversing the galaxies using these portals or hyperlinks.
Wormhole Theory

Ancient Alien Theory

Biological Theory (Atmospheric Life Forms)

Why should this aspect of life be any different in space or in the greater universe. There are some laws that are truly universal,one of them is that life will find a way to flourish even in the most adverse and unexpected circumstances. To read about biological UFOs.
Quantum Physics

Ronald Reagan (attempting to prove the existence of God) once said that he wanted to invite 20 atheist to the White House for a grand meal. After the meal was devoured he was going to ask his guest if they believed that there was a cook in the kitchen even though they never saw him/her. Sometimes you just have to believe in things that you cannot see, feel or touch.
As Niels Bohr said, "Anyone who is not shocked by quantum theory has not understood it." For an article on the top 10 ways quantum physics will change our lives.
Alternative Dimensions, Realms or Universes

Hollow Earth Theory
otherwise contains a substantial interior space. In the early 19th century an American eccentric, John Cleves Symmes (1779-1829), sought funding for an expedition to enter the earth through one of two 4,000-mile wide polar holes. Inside the Earth, he was convinced, a benevolent advanced civilization existed.
Earthlights, Ball Lightening Hypothesis

People have reported seeing ball lightning—a rare phenomenon that resembles a glowing sphere of electricity—for hundreds of years. Ball lightning often appears during thunderstorms and typically glows, spins, hisses, bounces, and floats. But scientists still can't explain what causes it, or even exactly what it is. (although in 2006 Brazil's physicist Antonia Pavoa believes he recreated it in a lab)
Man-Made UFOs / Back Engineered Technology
Ever since the famous Roswell Incident of 1947 there has been serious speculation that the US military has attempted to back engineer UFO technology. In the event that the US military actually took possession of this type of technology it would have been only natural to do so. There have been claims by high ranking officials that other technologies were discovered at the same time which include, night vision capabilities, lasers, bullet proof vest to name just a few. Follow this link for a list of 12 technologies that were developed in the 1950's and 60's that may have had alien origin.
Other UFO Theories
TheoriesThere are other theories about where UFOs comes from and the reason we see them but they are too numerous to go into here. Some of those theories include.
Here is a Condensed History of the UFO.
Important, well documented Landmark UFO Cases.
More recent Most Credible UFO Cases.
Pre-1900 UFO Cases.
- Cryptoterrestrial Hypothesis - The belief that extraterrestrial intelligence is not of our planet, but living among us.
- Electromagnetic Hypothesis - Earths magnetic fields affect human perception (similar to earthlights).
- Geophysical Locations - Certain geophysical locations have a strong effect on human consciousness (similar to earthlights).
- Hoax - The theory that all UFOs are fake and perpetrated on the public intentionally, for a short video on how to spot a hoax UFO sighting.
- Mass Delusion - For multiple witnesses, sometimes thousands to have a false belief bordering on psychotic, examples include Phoenix Lights and the Belgium Wave.
- Misidentified Hypothesis - All UFOs are man made or natural.
- Paranormal Hypothesis - Paranormal activity causes the human mind to materialize objects.
- Phyccotronic Hypothesis - The belief that the UFO phenomena is the result of the manifestation of the human subconscious.
- Psycho-Social Hypothesis - This theory says people are a product of their social environment and human behavior explains UFOs, such as, wishful thinking, hallucinations, misidentification etc. This is a one size fits all explanation.
Here is a Condensed History of the UFO.
Important, well documented Landmark UFO Cases.
More recent Most Credible UFO Cases.
Pre-1900 UFO Cases.