The 
			extraterrestrial hypothesis (ETH) is the belief that UFOs are 
			vehicles from other planets that contain intelligent life for the 
			purpose of visiting earth.
			
			This being the most popular view among the 
			public has been losing ground among those that have given Ufology 
			serious study and thought over a long period of time. This is the 
			perception that Hollywood has romanticized and advanced to the 
			public but is probably the least likely. The chances of intelligent 
			life climbing into to some type of space vehicle and visiting earth 
			are pretty slim. Back in the 1930's this was the main theory put 
			forward, since then physics and science have advanced to the point 
			of making this theory almost irrelevant. It now seems that this is 
			far too a simple explanation and in fact does not explain all the 
			strange things reported by witnesses. The universe is not really as 
			complex as one might think but it is full of things and knowledge 
			that man has yet to comprehend or experience so the simple Hollywood 
			explanation is probably far from realistic.
			
				Conspiracy 
				Theory
				
					
A 
					UFO conspiracy theory is any one of many often overlapping 
					conspiracy theories which argue that evidence of the reality 
					of UFOs is being suppressed by various governments around 
					the world. The prevailing thought is that earth governments, 
					especially the United States and to a lesser extent Russia 
					are in communication & cooperation with ETs and even 
					allowing for a certain number and type of alien abductions.
					
					
 
				
					
					
				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
				 
				
					
					
There 
					is no observational evidence for wormholes, but on a 
					theoretical level there are valid solutions to the equations 
					of the theory of general relativity which contain 
wormholes . 
					Because of its robust theoretical strength, a wormhole is 
					also known as one of the great physics metaphors for 
					teaching general relativity.This sounds very Hollywood but 
					the idea of bending distance and time has been around for 
					years. In theory this works and as a practical matter it 
					could explain the vast distances intelligent life would have 
					to travel to visit earth. This moves the ETH "From Another 
					Planet Theory" to a entirely new level.
					
					
					
					
					
					Ancient 
					Alien Theory
				 
				
					
					
This 
					theory is gaining in popularity and it proposes that 
					extraterrestrial beings have been visiting earth since the 
					advent of man. It puts forward that early man was in direct 
					contact with these entities even benefiting from alien 
					technology to build various pyramids and structures around 
					the world. There is some strong evidence that man was much 
					more advanced than originally thought or did have 
					technological support from unknown resources. Proponents 
					suggest that this contact influenced the development of 
					human beings and that man's DNA may have an alien variant. 
					Due to mans lack of sophistication, knowledge and technology 
					these aliens were misidentified as religious deities or Gods 
					and their technology were evidence of their divine status. 
					Early writings and scriptures,such as, Vedas Scriptures, 
					various San-script writings (from India, China, Pakistan) 
					and even the Bible seem to confirm this hypothesis.
					
					
					
					
					
					Biological Theory (Atmospheric Life Forms)
				 
				
					
					
When 
					you stop and give this aspect of the UFO equation some 
					thought this really has to be true. We know that life is 
					tenacious, persistent and procreates just about anywhere at 
					anytime under almost any conditions.
					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
				 
				
				
				
					
					
Quantum 
					Physics has been around since the 1920 but we are only just 
					beginning to understand what it really is and what it means 
					to mankind. When the possibility of more than one universe 
					was mention it was pretty radical stuff. Even today quantum 
					physics is just on the fringe of mainstream discussion. It 
					is always hard for us to believe in things that we cannot 
					see or fully understand.
					
						
					
					While at a glance this may seem 
					like just another strange theory, it contains many clues as 
					to the fundamental nature of the universe and is more 
					important then even relativity in the grand scheme of things 
					. Furthermore, it describes the nature of the universe as 
					being much different then the world we see.
					
					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
					
					
					
					
Theories 
					with more than one dimension of time have occasionally been 
					advanced in physics, whether as a serious description of 
					reality or just as a curious possibility. This theory is 
					gaining momentum as more and more scientist believe in 
					quantum physics. If you believe like many respected 
					scientist have come to believe that there are multiverses 
					(more than one universe) than it is not that much of a 
					stretch to believe that beings could be traveling between 
					universes (dimensions). This does necessarily mean that 
					intelligent life forms are "time traveling" but they are 
					simply traveling between dimensions, realms or universes.
					
					
						
					
					
						
					
					Hollow 
					Earth Theory
				 
				
					
						
						
This 
						theory proposes that the planet earth is either entirely 
						hollow or 
 
				 
				
					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.
				
					
						
					
					Though an object of derision to 
					most people, some took him seriously, and the idea of a 
					hollow Earth was championed in a number of books throughout 
					the rest of the century and right into the next.Today, 
					hollow-earthers believe flying saucers travel in and out of 
					the polar holes. The people inside are descendants of 
					Atlantis and its Pacific equivalent, Lemuria.
					
					
					
					
					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)
					 
					Related to the balls of light 
					hypothesis is the earthlights or 
earthquake 
					lights hypothesis which is based on the 
					work of various independent researchers who have attempted 
					to link UFO sightings where geological faults and 
					geomagnetic fluctuations occur.
					
 
				Man-Made 
				UFOs / Back Engineered Technology
				
					
					
Governments 
					and military have been attempting to emulate the performance 
					of UFOs for decades. Pilots (especially since WWII) have 
					reported that these craft have performed phenomenal feats 
					and are capable of speeds that far exceeds our current 
					technology. A good example of these efforts can be 
					understood by reading about the 
AVRO 
					Corporation which mysteriously and abruptly 
					closed their doors in 1962. Follow this link for a list of 
					the 
top 
					11 man-made UFOs that were made on earth.
 
				
					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.
					
						- 
						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.