9 Facts About Project Blue Book, the Government's Top-Secret UFO Program

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iStock.com/font83

Between 1952 and 1969, the U.S. Air Force conducted a series of studies on UFO sightings called Project Blue Book. Not only is there a new History Channel series about the program, this year also marks the 50th anniversary of the project’s termination. Get to know the secretive program better.

1. Project Blue Book wasn’t the government’s first UFO study.

In 1947, a private pilot named Kenneth Arnold reportedly spotted nine glowing UFOs zooming over Washington's Mount Rainier. The public went wild for the so-called “flying saucers.” Shortly after, the U.S. government launched Project SIGN to determine if such objects were a threat. In 1948, Project SIGN purportedly published a document called the “Estimate of the Situation,” which suggested that extraterrestrials were a possible explanation for UFO sightings. As the story goes, Air Force officials destroyed the document and launched a more skeptical investigation in the late 1940s called Project GRUDGE. Blue Book came a few years later.

2. The “Estimate of the Situation” was inspired by a mind-boggling event.

In the 1960s, Air Force officials denied that the “Estimate of the Situation” document ever existed. Those who vouch for its authenticity, however, say the report was inspired by a 1948 UFO sighting in Alabama, after two experienced pilots saw a torpedo-shaped “glowing object” zip past their aircraft and rocket into the clouds. The report shocked and baffled many of Project SIGN’s researchers, though scientists would later claim the sighting was consistent with a bolide, or bright meteor.

3. “Blue Book” was named after a college testing staple.

Whether UFOs are extraterrestrial in origin is debatable. What’s undeniable is that, during the 1950s, people routinely spotted (or thought they spotted) objects flying over the United States—and it was the onus of the U.S. military to figure out what they were and whether they posed any danger. Blue Book would earn its name because, at the time, Air Force officials equated studying the phenomenon with preparing for a collegiate “blue book” final exam.

4. Officials developed a special protocol for handling UFO sightings.

A central part of Project Blue Book was the creation of a standardized questionnaire for UFO sightings. Some sample prompts: “Draw a picture that will show the shape of the object or objects … What was the condition of the sky? ... Did the object: Suddenly speed up and rush away at any time? Change shape? Flicker, throb, or pulsate?” Eventually, every U.S. Air Force base ended up designating a special officer to collect these UFO reports.

5. Thousands of reports were collected—and some haven’t been explained.

By the time Project Blue Book was closed, officials had gathered 12,618 UFO reports. Of those, 701 were never explained. Nearly half of those unidentified UFOs appeared in 1952 when a whopping 1501 UFOs were sighted. (Interestingly, that following year, it became a crime for military personnel to discuss classified UFO reports with the public; the risk of breaking the law could mean up to two years imprisonment.)

6. Project Blue Book saw five leadership changes.

Each person in command saw the purpose of Project Blue Book differently. Captain Edward J. Ruppelt, for example, treated the job as a serious scientific quest and is often lauded as the project’s most impartial leader. (Notably, he is responsible for coining the term UFO.) Major Hector Quintanilla, who took over the project in 1963, was more interested in turning Blue Book into a PR front and focused on quelling the public’s interest in UFOs—a desire that would eventually lead to charges of a government cover-up.

7. Blue Book made such bad scientific mistakes that Congress had to get involved.

In 1965, Oklahoma Police, the Tinker Air Force Base, and a local meteorologist using weather radar independently tracked four unexplained flying objects. Under Quintanilla’s advisement, Project Blue Book would claim that these witnesses had simply observed the planet Jupiter. The problem with this explanation? Jupiter wasn’t even visible in the night’s sky. “The Air Force must have had its star finder upside-down during August,” Robert Riser, an Oklahoma planetarium director, said at the time. A series of more badly botched scientific explanations eventually led to a congressional hearing.

8. The Project’s desire to dismiss unidentified phenomena bothered its sole scientist.

Project Blue Book had one consistent scientific consultant, astronomer Dr. J. Allen Hynek. In 1968, Hynek wrote: “The staff of Blue Book, both in numbers and in scientific training, is grossly inadequate … there is virtually no scientific dialogue between Blue Book and the outside scientific world … The statistical methods employed by Blue Book are nothing less than a travesty” [PDF]. Hynek held Quintanilla in particularly low regard, saying, “Quintanilla’s method was simple: disregard any evidence that was counter to his hypothesis.”

9. In 2007, a new government Inquiry into UFOs was launched.

Between 2007 and 2012, the U.S. government spent $22 million on a new UFO study called the “Advanced Aviation Threat Identification Program.” (Nowadays, UFOs are called UAPs, or "Unidentified Aerial Phenomena": You can watch one here.) This January, more than three dozen of the program’s studies became publicly available, revealing the government’s interest in everything from warp drives to invisibility cloaks.

6 Strange Maritime Mysteries

Neville Mountford-Hoare/iStock via Getty Images
Neville Mountford-Hoare/iStock via Getty Images

The oceans cover over 70 percent of our planet, so it's little wonder that their seemingly impenetrable depths have provided a series of fascinating mysteries, from missing ships to eerie monsters. Below are six mysteries of the deep—some of which scientists think they've at least partly explained, while others remain truly puzzling.

  1. The Mary Celeste

On December 5, 1872, the crew of the British ship the Dei Gratia spotted a vessel bobbing about 400 miles off the coast of the Azores. They approached the Mary Celeste to offer help, but after boarding the ship were shocked to find it completely unmanned. The crew had disappeared without a trace, their belongings still stowed in their quarters, six months' worth of food and drink untouched, and the valuable cargo of industrial alcohol still mostly in place. The only clues were three and a half feet of water in the hold, a missing lifeboat, and a dismantled pump. It was the beginning of an enduring mystery concerning what happened to the crew, and why they abandoned a seemingly sea-worthy vessel.

Numerous theories have been suggested, including by crime writer Arthur Conan Doyle, who penned a short story in 1884 suggesting the crew had fallen victim to an ex-slave intent on revenge. A more recent theory has pointed the finger at rough seas and the broken pump, arguing they forced the captain to issue an order to abandon ship. Since the missing crew have never been traced, it seems unlikely that there will ever be a satisfying answer to the enigma.

  1. The Yonaguni Monument

An underwater area known as the Twin Megaliths at the Yonaguni Monument
An area known as the Twin Megaliths at the Yonaguni Monument
Vincent Lou, Wikimedia // CC BY 2.0

In 1986, a diver looking for a good spot to watch hammerhead sharks off the coast of the Ryukyu Islands in Japan came across an extraordinary underwater landscape. The area reportedly looked like an ancient submerged village, with steps, holes, and triangles seemingly carved into the rocks. Ever since it was first discovered, controversy has surrounded the site that's become known as the Yonaguni Monument, with some researchers—such as marine geologist Masaaki Kimura—arguing it is a clearly manmade environment, perhaps a city thousands of years old and sunk in one of the earthquakes that plagues the region. Others believe it's a natural geological phenomenon reflecting the stratigraphy (layers) of sandstone in an area with tectonic activity. The area is open to scuba divers, so the really curious can strap on air tanks and decide for themselves.

  1. The Bermuda Triangle

The Bermuda Triangle has probably spawned more wild theories, column inches, and online discussion than any other ocean mystery—more than 50 ships and 20 aircraft are said to have vanished there. Although the triangle has never officially been defined, by some accounts it covers at least 500,000 square miles and lies between Bermuda, Florida, and Puerto Rico.

The mystery first caught the public imagination in December 1945 when Flight 19, consisting of five U.S. Navy TBM Avenger torpedo bombers and their 14 crewmembers, were lost without a trace during a routine training operation in the area. Interest was further piqued when it was later reported that one of the search-and-rescue planes dispatched to find the missing team had also disappeared. Articles and books such as Charles Berlitz’s The Bermuda Triangle, first published in 1974 and having since sold over 20 million copies in 30 languages, have served to keep the mystery alive, providing potential theories both natural and supernatural. Scientists—and world-renowned insurers Lloyd’s of London—have attempted to debunk the myth of the Bermuda Triangle, offering evidence that the rate of disappearance in the vast and busy triangle is no higher than other comparable shipping lanes, but such is the power of a good story that this is one story that seems likely to continue to fascinate.

  1. The Kraken

A model of a giant squid on display at the Natural History Museum in London in 1907
A model of a giant squid on display at the Natural History Museum in London in 1907
Topical Press Agency/Getty Images

For hundreds of years, sailors told tales of an enormous sea creature with huge tentacles known as the Kraken. Stories around the mythical kraken first started appearing in Scandinavia in the 12th century, and in 1555 Swedish cartographer Olaus Magnus provided an account of a sea creature with “sharp and long Horns round about, like a Tree root up by the Roots: They are ten or twelve cubits long, very black, and with huge eyes.” The stories persisted, often mentioning a creature so large it resembled an island. In his 1755 book The Natural History of Norway, Danish historian Erik Ludvigsen Pontoppidan described the kraken as “incontestably the largest Sea monster in the world."

Scientists have proposed that these stories might derive from sightings of giant squid (Architeuthis dux), although evidence for an even larger, yet extremely elusive, colossal squid (Mesonychoteuthis hamiltoni) has also come to light. The colossal squid is found in the deepest part of the Southern Ocean surrounding Antarctica, and is thought to be up to 46 feet long and 1100 pounds. The problem is that the animal is so rare very few specimens have been found intact, and no live specimen has ever been observed, which means that estimating its exact size is difficult. Researchers have also noticed that sperm whales have been observed with large scars, and have suggested that these could be the result of violent encounters with the colossal squid, which is known to have sharp rotating hooks on the ends of their tentacles.

  1. The Treasure of the Merchant Royal

The remains of the Merchant Royal are known as one of the richest shipwrecks ever. The ship set sail from the New World in 1641 laden with 100,000 pounds of gold, 400 Mexican silver bars, and thousands of precious gems—in total, a haul thought to be worth $1.3 billion today. The ship got caught in a storm and was thought to have gone down somewhere off the coast of Cornwall, England. The lost wreck became known as the “el Dorado of the seas” due to the enormous value of its cargo, and over the years numerous treasure hunters have searched fruitlessly for its final resting place, which remains undiscovered. In 2019 fishermen snagged what is thought to be the anchor from the Merchant Royal, but to date the dangerous conditions and extreme depths at which the wreck is thought to lie have meant it has remained unclaimed.

  1. Attack of the Sea Foam

In December 2011, residents of Cleveleys, England, awoke to what appeared to be a soft blanket of snow. But as locals ventured out into the streets it soon became clear that this was no snowstorm, but instead something far more puzzling. Trees, cars, roads, and houses were all wrapped in a thick, white layer of foam. The Environment Agency were quickly deployed to take samples of the sea foam, since residents were understandably concerned as to the origin of the strange, gloopy substance, fearing it might be caused by pollutants.

The dramatic images of the foam-soaked town soon had journalists flocking to the region to investigate the phenomena, but as quickly as it appeared the foam disappeared, leaving behind only a salty residue. Scientists analyzing the foam confirmed it was not caused by detergents, and instead suspected that it was caused by a rare combination of decomposing algae out at sea and strong winds, which whipped up the viscous foam and blew it into land. The phenomena has apparently occurred at other times before and since, and researchers are now working to try and understand the exceptional conditions that cause it to form so that residents can be warned when another thick blanket is set to descend.

Bonus: The Bloop—Mystery Solved

Over the years, the oceans have produced a number of eerie and often unexplained sounds. In 1997, researchers from NOAA listening for underwater volcanic activity using hydrophones (underwater microphones) noticed an extremely loud, powerful series of noises in the Pacific Ocean. The unusual din excited researchers, who soon named it “The Bloop” in reference to its unique sound.

Theories abounded as to the origin of the bloop—secret military facility, reverberations from a ship’s engine, or an enormous sea creature. The most fanciful suggestion stem from H. P. Lovecraft fans who noticed that the noise came from an area off South America where the sci-fi writer’s fictional sunken city of R’lyeh was supposed to be. They proposed that the bloop might have originated from Lovecraft’s “dead but dreaming” sea creature, Cthulhu. In 2005, however, scientists found that the mysterious sound was in fact the noise made by an icequake—or an iceberg shearing off from a glacier.

Death at the South Pole: The Mystery of Antarctica's Unsolved Poisoning Case

Amundsen-Scott South Pole Station in Antarctica
Amundsen-Scott South Pole Station in Antarctica
Chris Danals, National Science Foundation

Rodney Marks was walking from a research building to the main base at the Amundsen-Scott South Pole Station when he started to feel strange. This wasn't the normal weirdness people deal with when adjusting to the -80°F temperatures and 24-hour nights of Antarctic winters. The 32-year-old astrophysicist was struggling to breathe. Soon, his vision became weak. He was also very tired and went to bed early, hoping to sleep off whatever mysterious sickness was plaguing him.

But sleep didn't help. Instead, things just got worse—much worse. At 5:30 a.m. the morning of May 12, 2000, Marks woke up vomiting blood. He went to the station's doctor, Robert Thompson, three times over the course of the day, and with each visit, his symptoms appeared to grow more excruciating. Pain burned through his joints and stomach. His eyes were so sensitive that he had to wear sunglasses even though the sun hadn't risen over the base in several weeks. As his physical condition deteriorated, so did his mental state: He became so agitated that the doctor wondered if anxiety wasn't the cause of his symptoms.

When Marks visited the physician the third time that day, he was distressed to the point of hyperventilation. Thompson injected him with an antipsychotic to calm him down. Marks laid back and his breathing slowed. To the untrained observer, it may have looked as though he was getting better.

But that's not what was happening. Shortly after receiving the shot, Marks went into cardiac arrest, and after 45 minutes of unsuccessful resuscitation attempts, Thompson declared him dead at 6:45 p.m.

As soon as the fight to save his life ended, the 49 people living at the base were faced with a new problem: a dead body in one of the most remote places on earth, at a time of year when it was too cold for planes to land. It would be months before an aircraft was able to collect Marks's remains—and years before it was revealed that there was a chance he had been murdered.

Crime and Death in Antarctica

Death is rare in Antarctica, but not unheard of. Many explorers perished in the late 19th and early 20th centuries in their quests to reach the South Pole, and potentially hundreds of bodies remain frozen within the ice. In the modern era, more Antarctic fatalities are caused by freak accidents. Three scientists were riding a Muskeg tractor across the tundra in 1965 when the vehicle plunged into a crevasse, killing everyone on board. In 1980, Amundsen-Scott Station cook Casey Jones died while attempting to clear snow from a shaft in a fan room when the packed snow collapsed and crushed him.

There's also a history of violence on the continent. According to one unconfirmed story reported in Canadian Geographic, a scientist working at Russia's Vostok Station in 1959 snapped after losing a chess game and murdered his opponent with an axe. (Chess was supposedly banned from Russia's Antarctic bases after that.) More recently, in October 2018, a Russian scientist working in Antarctica allegedly stabbed his colleague following a possible nervous breakdown.

With some of these crimes, the Antarctic setting itself may have played a role. Scientists living in Antarctica are forced to share cramped quarters with the same group of people for months at a time. Contact with the outside world is limited, and depending on the weather, going for a walk to clear the mind isn't always an option.

"You're far away from home. You're far away from the people that form your normal social network. You're isolated with a group of people you didn't choose," Peter Suedfeld, a psychologist at the University of British Columbia who has studied the effects of Antarctic isolation on the mind, tells Mental Floss.

The extreme isolation there is rivaled only by what astronauts experience in space—in fact, space agencies conduct studies in Antarctica to simulate their long-term missions.

On top of dealing with boredom and claustrophobia, researchers in Antarctica are adjusting to either constant day or night. When someone's circadian rhythm—the biological system governed by the 24-hour day—is disrupted, the negative effects are felt in both the body and mind. According to one study, people on disrupted circadian cycles are more likely to exhibit aggressive behaviors.

"Because of the environment, people do get irritable, sensitive, maybe quicker to take offense at something that wasn't meant to be offensive," Suedfeld says. "I think it's fascinating that there hasn't been more violence in Antarctica."

A Belated Autopsy

Rodney Marks was already familiar with the stressors of life in Antarctica when he signed up to work there from 1999 to 2000. The Australian native had previously wintered on the continent from 1997 to 1998 as part of the Center for Astrophysical Research in Antarctica (CARA)'s South Pole Infrared Explorer project. Dr. Chris Martin, one of the researchers who worked on the project with Marks, told the New Zealand Herald: "Rodney liked it so much he wanted to go back again."

For his second stay, he worked on the Antarctic Submillimeter Telescope and Remote Observatory project as a researcher for the Smithsonian Astrophysical Observatory. His job consisted of collecting data with a massive infrared telescope and using it to improve viewing conditions at the South Pole. Antarctica is considered one of the best places on Earth to study space, and his work enabled astronomers to make important observations.

Marks charmed his colleagues with his bohemian style and friendly personality. He joined the base band, Fannypack and the Big Nancy Boys, and was dating maintenance specialist Sonja Wolter. Darryn Schneider, the only other Australian at the base that winter and Marks's friend, described him in a blog post: "His dry wit was sometimes misinterpreted here by the people not used to it. This is where his considerate nature and his kindness would come out. I saw him numerous times make amends in a very nice way for these misunderstandings. He would also say or do something kind for someone having a hard time in general."

So when he died suddenly that May, roughly six months into his second journey at the pole, it shocked the researchers and technicians at Amundsen-Scott Station. The station doctor, Robert Thompson, told the young man's colleagues that Marks had died of unknown but natural causes, likely a massive heart attack or stroke. Because it was Thompson's job to treat live patients, not perform autopsies, they would have to wait to learn any more details.

With months of unbroken darkness and dangerous cold stretched out before them, October was the soonest it would be safe for aircraft to land at the South Pole. In the meantime, people living at the base used the excess hours in their days to gather oak scraps and cut and polish them into a casket. They loaded Marks's body into the makeshift coffin and laid him to temporary rest in the base's storage, where the frigid climate would preserve his remains until the end of winter.

On October 30, a plane transported the body from Amundsen-Scott Station to Christchurch, New Zealand, where forensic pathologist Dr. Martin Sage finally was able to perform an autopsy. The amount of time that had passed between the death and the examination didn't stop Sage from making a disturbing observation: Marks hadn't died of natural causes after all. According to the post-mortem, he had ingested approximately 150 milliliters of methanol—roughly the size of a glass of wine. Methanol is a type of alcohol used to clean scientific equipment in Antarctica: It's subtly sweet, colorless, and toxic even in small amounts—which means a fatal dose could easily be slipped into someone's drink without their knowledge.

That left a limited number of options on the table. To the people who lived and worked with Marks up until his final hours, the possibility that he had killed himself was hard to believe. He had thrived in the harsh beauty of Antarctica. He was doing important research at the observatory, and when he wasn't working, he had his friends and Wolter, whom he had planned to marry, to keep him company. But if Marks hadn't poisoned himself, that left his colleagues with the unsettling possibility that they had shared a home with a murderer for over half a year.

An Inconclusive Inquest

Because Antarctica is governed by a treaty signed by 54 nations, handling crimes there can be a headache. Marks was from Australia and had worked for an American station, but he died within the Ross Dependency—a territory of Antarctica claimed by New Zealand. By October, New Zealand had taken over the job of looking into the incident.

While the coroner of Christchurch began an initial inquest in 2000, the investigation took years to complete, and involved several hearings. Detective Senior Sergeant Grant Wormald looked at four possible causes of death: Marks drank the methanol accidentally; he drank it for recreation; he drank it to kill himself; or someone else had spiked his drink. In 2006, Wormald stated that suicide was the least likely explanation for the young scientist's death, citing his promising career and relationship.

It was more plausible that Marks had ingested the solvent to get high and accidentally overdosed. He was a heavy drinker, and had been known to use alcohol to cope with his Tourette's syndrome. But Wormald saw this as further evidence that he hadn't drunk the methanol on purpose: Marks had access to plenty of alcohol on the base if he was looking to self-medicate, and as an experienced binge-drinker, he would have known the risk of drinking unfamiliar substances. When he did get sick, he acted just as bewildered as the rest of the crew, suggesting he had no idea there was poison inside his body.

Wormald concluded: "In my view it is most likely Dr. Marks ingested the methanol unknowingly." But how exactly the methanol got into Marks's system—and if it wasn't an accident, who might have given it to him—remained a mystery.

According to The New Zealand Herald, some experts were critical of Robert Thompson's treatment of Marks in his final hours. William Silva, who had been a physician at a nearby Antarctic station, reviewed Thompson's medical notes from that day and questioned certain aspects of his care. Thompson had access to an Ektachem blood analyzer, a machine that would have detected the dangerous levels of methanol in his patient's system and likely prompted the doctor to take steps toward appropriate treatment. But the lithium-ion battery had died some time before, which meant that turning it off reset its electronic memory. It was shut off the day of Marks's death, and to power it back up, Thompson would have needed to recalibrate it—a process that takes 8 to 10 hours [PDF].

Thompson later testified that he had been too busy caring for Marks to use the Ektachem. He also said that the machine was difficult to use and maintain—a claim that Silva disputed. According to Silva, the Ektachem "is quite straightforward," and Thompson could have called the manufacturer's free technical support line if he was having issues with it (though telephone service was spotty at best).

Thompson never provided a response to Silva's testimony. He was impossible to get in touch with during the later stages of the inquest, having seemingly fallen off the grid. He was never charged with any wrongdoing. (Thompson could not be reached for comment.)

The National Science Foundation (NSF), the U.S. organization that runs the Amundsen-Scott Station, reportedly did little to make matters clearer. When Wormald asked for reports on Marks's death, the NSF reportedly wasn't forthcoming, saying it didn't have any reports that were relevant to his investigation. The foundation also reportedly ignored his requests when he asked for the results of lab tests conducted on the scant evidence gathered from Marks's room and work station before they were cleaned.

The NSF denies Wormald's characterization of how it handled the investigation. In a statement to Mental Floss, a representative said: "[The] NSF consistently cooperated with the Christchurch coroner's office and New Zealand Police to address this tragic situation. Dr. Marks was an important member of the Antarctic research community. NSF continues to extend its deepest condolences to his family, friends and colleagues."

But according to Wormald, any useful information he pried from the government agency was the product of his own persistence. Only after being pestered by the detective, he said, did the NSF agree to send out a questionnaire to the 49 crew members who had been at the station at the time of Marks's death. The foundation vetted the questions first, "to assure ourselves that appropriate discretion has been exercised," and when they were finally mailed out, they came with a note saying participation wasn't mandatory. Only 13 of Marks's 49 colleagues responded.

A Tragic Accident—Or The Perfect Crime?

Without much cooperation from the National Science Foundation and with no solid leads, the investigation failed to move forward. It fizzled out completely in 2008 when coroner Richard McElrea released a report saying that no conclusions could be drawn one way or the other about the circumstances surrounding Marks's poisoning. Referencing a 2000 report [PDF] based on the medical notes about the case that said there was no reason to suspect homicide or accidental poisoning, McElrea wrote, "I respectively [sic] disagree that accidental poisoning and even foul play can be adequately disregarded without a full and proper investigation." His main takeaway was that the disorganization of the case indicated "an urgent need to set comprehensive rules of investigation and accountability for deaths in Antarctica on a fair and open basis."

Outside of true crime internet forums, a clear idea of what happened to Marks has never emerged. He didn't have any known enemies at Amundsen-Scott Station, and there was no evidence implicating any of the workers at the base with a crime.

With the inquiry into his death producing more questions than answers, Rodney Marks's story occupies a strange place in the history of Antarctic tragedies. Driving on approved routes may reduce the risk of falling into a crevasse—and banning chess may stop game-related fights—but this particular incident left no obvious path toward preventing ones like it from happening in the future. It's not even clear whether Marks's death should be grouped with Antarctica's freak accidents or rare acts of violence.

As of 2019, there's still no system in place for handling homicides that happen on the continent. With so many territorial claims, and some that even overlap, the general rule is that jurisdiction falls to the home country of the person who committed the crime and the station where it took place. That means if a Russian researcher assaults someone at a Russian station, as was the case in October 2018, the case is handled by Russian authorities. But things get stickier if an American commits a crime on a Russian base, in which case both countries could have a claim to the investigation. Situations where an apparent crime produces a body and no obvious perpetrator are, of course, even more complicated.

Until Marks's death, that was an issue the nations working in Antarctica had never had to face. There still has never been a trial for a murder that happened on the continent—though the question of whether murder has been committed there remains unanswered.

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