The question of whether little green men are visiting Earth may be an idea whose time has come and gone, according to a leading British educational and research organization.
For the past 31 years, the Association for the Scientific Study of Anomalous Phenomena (ASSAP), has been dedicated to finding explanations for a variety of subjects considered fringe science -- ghostly hauntings, psychic phenomena and UFOs, among other things, even accounts of fish spontaneously falling from the sky.
ASSAP is a registered United Kingdom charity formed in 1981 by researchers, with more than 300 members.
The association approaches investigations "without preconceived ideas of what we will find. We are interested neither in starting new philosophies nor in spreading unyielding skepticism. We simply want the truth, whatever it may turn out to be," according to the group's website.
UFOs were once a central part of the ASSAP's mission. But in recent years, members have noted a decline in the number of UFO research groups in the U.K.
According to the ASSAP chairman, Dave Wood, the lack of overwhelming evidence of alien visitation to Earth may signal the end of UFOlogy, a generic term widely used to refer to the study of UFOs.
"The trends all seem to point in the direction of groups that have been into this are beginning to close down because of the reduction in the number of reports," Wood told The Huffington Post. "The UFO reports that remain are much more prosaic in nature. Large numbers of them, for example, are of Chinese lanterns and things like that which are very easily explainable."
To determine if UFO studies have a future in the U.K., ASSAP will spearhead a conference, dubbed "Seriously Unidentified," at the University of Worcester on Nov. 17.
"We've called for this conference to try and establish what the mood is in the community, although some of the press reports so far have presented it as a bit of a fait accompli -- UFOlogy is dead," said Wood.
In the United States, the Air Force ended its long study of UFOs -- Project Blue Book -- in 1969, concluding that 95 percent of UFO sightings are misidentifications of things like balloons, clouds, conventional aircraft, birds, planets and satellites, with a residue of about 4 to 5 percent remaining as unknowns or unidentified.
That doesn't mean those unknowns are visitors from another planet, but without some major new development in the entire UFO field -- including a mass eyewitness encounter with an object that lands, producing beings that say, "Take us to your leader" -- is there really any reason to continue being interested in flying saucers?
"It's very much an open verdict as far as I'm concerned," said Wood. "There's definitely the evidence which points to a major decline in sightings and participation, but I'm very open-minded to the idea that there actually could be a further renaissance around the corner."
Explaining the unexplained in images
These candle-lit Chinese lanterns can rise high into the sky and are often mistaken for UFOs.
This is a composite image of how three alleged UFOs maneuvered about in the sky over Melbourne, Australia, in early February, 2013. The final verdict isn't in yet on whether they're birds, aircraft, balloons, bugs or something truly unidentified.
On Dec. 20, 2012, a bright, circular object (pictured at the top of this composite image) was videotaped exploding in the skies above Sacramento, Calif. It wasn't immediately identified, resulting in speculation that it was either an alien spacecraft, military top secret weapon, runaway planet, North Korean satellite, among others. Within a short period of time, it became apparent that this was a weather balloon. The bottom part of this image shows such a balloon as it ascended over Tampa Bay, Fla., on July 2, 2012, and exploded in an identical manner as the Sacramento object, probably much to the dismay of all true ET believers out there.
This is a composite of images shot by two eyewitnesses of a boomerang-shaped UFO they reported seeing over their Burbank, Calif., home on Oct. 5, 2012. Mutual UFO Network photo/video analyst Marc Dantonio concluded the object was likely "a balloon, floating on the wind that has collapsed in half."
This four-image series of lights in the sky was recorded over Warren, Mich., on Jan. 10, 2013. The lights were seen changing into several patterns. The most logical explanation for these types of UFOs is a series of balloons or lanterns.
This composite image shows four different times that alleged UFO were photographed above Earth by either space shuttles or the International Space Station. The big question is whether or not they are truly unidentified objects or if they are more likely reflections from spacecraft windows, meteors or fast-moving spacecraft-generated debris.
What appear to be pink-red UFOs are actually lens flares from the Google Earth street view camera as it snapped images in Texas (left) and New Mexico (right).
These two flying saucer-shaped, pink-colored lens flares were created by the Google Maps camera as it drove through locations in Sedona, Ariz. (left) and Flagstaff, Ariz. (right). The images were snapped in April 2009. Submitted to HuffPost by trenna.
This skybound lens flare was created by a Google Maps camera in June 2008 over Whiteriver, Ariz. Submitted to Huffington Post by Cheryl Weeks.
This very Earthbound lens flare was created by a Google Maps camera in November 2007 at Gulfport, Miss. Submitted to Huffington Post by Jenni Parker.
This seemingly grounded lens flare was created by a Google Maps camera in January 2008 at Eureka Springs, Ark. Submitted to Huffington Post by SE.
This lens flare appears to be following a car. The Google Maps image was created in October 2008 at Escanaba, Mich. Submitted to Huffington Post by Mary Robinson.
On the night of Sept. 28, 2012, a group of strange-looking lights appeared in the sky near Cincinnati, Ohio. First there was one, then, two, then three lights, slowly descending. It turns out, however, that these lights were originating from a group of skydivers performing a pyrotechnics jump at the La Salle High School homecoming event.
Some UFO sightings may be due to a natural phenomenon known as sprites, like this one shown from 2006. "Lightning from [a] thunderstorm excites the electric field above, producing a flash of light called a sprite," said geophysicist Colin Price.
Clouds: Saucer-shaped or "lenticular" clouds that form at high altitudes have been confused with UFOs.
Blimps or advertising balloons: These can look like flying saucers from some angles, especially at night.
On June 19th the Swedish-based diving company Ocean Explorer discovered something they've never quite seen before. They were exploring in the Baltic Sea between Sweden and Finland looking for sunken treasures when a very unusual image suddenly appeared on the sonar. A 197 feet diameter cylinder shaped object was discovered at the depth of approximately 275 feet which resembles the Millennium Falcon from the movie Star Wars.
An image released on June 15, 2012, shows a close-up view of the unidentified object sitting on the bottom of the Baltic Sea.
Close-up of rock bed that forms the Baltic Sea UFO, which still mystifies researchers.
One of several odd stone circle formations, sitting on top of the unidentified object at the bottom of the Baltic Sea.
A circular UFO hovers above the Neumayer-Station III research facility in Antarctica on Aug. 10, 2012. Theories ranging from a simple weather balloon to a more elaborate ship from another planet have run the Internet gamut. The next slide shows a closeup of the object.
This is a closeup of the UFO from the previous slide. No official explanation has been offered about the object.
Pictured is a quad copter -- a deliberately manufactured UFO created by special effects wizard Marc Dantonio for a National Geographic special, "The Truth Behind: UFOs," which aired in December 2011. On the left is what the small device looks like resting on the ground, measuring 4 feet in circumference. At right, is how it appeared behind a tree in the night sky.
In February of 2012, this fireball was captured by a Texas police chief's A dashboard camera. F.A.A. say this was probably a meteor, falling to Earth. .
Meteors: Space debris can create a spectacular light show when it burns through the Earth's atmosphere, and sometimes reported as UFOs.
Civilian or military aircraft: Planes can look mysterious at night or in certain light conditions, thus confusing an observer.
Wood speculates that, at least in the U.K., there's a possibility that within 10 years, UFOs may become a dead issue.
"During the 80s, about half of sightings referred to ASSAP were UFOlogical in nature. It's now very few, whereas numbers of haunting phenomena have massively increased in the last 10 years, while the number of UFO groups have dropped off from over 100 to about 30," Wood added.
Speakers at ASSAP's upcoming event represent a range of perspectives on the UFO subject, including:
ASSAP hopes that its "Seriously Unidentified" summit will add to the ongoing UFO debate and "will play a part in defining the future direction of British UFOlogy."
At the beginning of 2012, HuffPost reported how the new year saw large numbers of UFO reports in the U.S. and abroad.
And while UFO sightings are possibly declining in the U.K., a recent report by Open Minds suggests UFOs appear to be on the increase elsewhere in the world, including Finland, Argentina and Australia.
The fact that no truly irrefutable evidence has yet to be revealed -- an actual ship or piece of one, an actual alien body or piece of one -- after more than 60 years of claims and reports, is why the future of UFOlogy will be seriously discussed at the upcoming ASSAP conference.
One of ASSAP's founding members is Jenny Randles, author of over 30 books on UFOs. She's critical of how the media in general has reported UFOs over many decades, as well as how many people will believe anything they read or hear about flying saucers.
"UFOlogy is no more dead than it ever was," she said in an email to HuffPost. "It has, though, matured somewhat. There have always been thousands of people happily blaming the cover-up, the government, unseen alien forces, whatever, for us not knowing the truth and waiting for this to be handed over to them.
"A galactic cop-out, so to speak. Perhaps some of those have finally got fed up and gone away and, if so, then we are all the better for it."
Watch this classic 1958 portion of "The Mike Wallace Interview"
Part of the problem is that it seems like most believers have more faith than evidence in the idea that aliens are coming and going, and we can't do anything about it.
"My view is the idea of UFOs as craft from other worlds is a modern myth largely created and sustained by popular culture and the media," said David Clarke of Sheffield Hallam University and the U.K.'s National Archives UFO adviser.
"As a folklorist, I'm interested in why large numbers of people continue to believe in something despite the lack of evidence," Clarke told HuffPost. "The bottom line is that UFO equals unidentified flying object. Since the advent of the Internet, very few remain unidentified."
Clarke, author of the recent book, "The UFO Files," led the campaign for disclosure of previously classified UFO files in the U.K.
On the question of whether UFOlogy is dead or alive, he suggests ASSAP will still be wondering that 10 years from now.
"The question 'do aliens exist' has actually nothing to do with 'do UFOs exist'," Clarke said. "Of course UFOs exist, in that people see unidentified things in the sky. The bottom line is that UFOs = aliens is a dead end."