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Aliens & UFO's

‘Laser Cloak’ Could Hide Earth from Evil Aliens

A new paper describes how laser beams could disrupt measurements of Earth’s orbit around the sun, potentially deceiving inquisitive aliens. Here, a 22W laser used for adaptive optics shines from the Very Large Telescope in Chile. (Image: © ESO/G. Hüdepohl)

A simple laser beam could disrupt aliens’ observations of Earth, making it look like there’s nobody home on the third rock from the sun, a new study suggests.

David Kipping, an astronomer at Columbia University in New York, said he first considered this idea when he heard about the strangely dimming star that was detected recently by NASA’s Kepler space telescope. Researchers speculated the signal could have come from an “alien megastructure” orbiting the star.

That’s a remote possibility, many scientists stressed; the star’s strange signal likely has a natural cause. But the Kepler observations got Kipping thinking about ways humanity could alter the signals it sends into space — or hide them altogether from life-hunting aliens, who may have malicious intentions.

He and Columbia graduate student Alex Teachey concluded that it would be surprisingly easy to wipe out Earth’s signal, distort it to look strange or even edit out the fingerprint of life — provided researchers knew the location of the snooping aliens.

“We essentially played the thought experiment that if we really had xenophobic tendencies and wanted to avoid the Earth being discovered (as Stephen Hawking and others have been warning about), could we hide the Earth from alien planet-hunters?” Kipping said in an email.


How to build a cloaking device

The key to Kipping and Teachey’s thinking lies in the way humans have identified most planets around other stars, a process called the transit method. This strategy, which has most famously been employed by the Kepler spacecraft, detects tiny dips in the brightness of stars, which can indicate an orbiting planet.

The transit method could theoretically be used by alien civilizations to detect Earth, too. But there’s a way to trip up such extraterrestrial searches, Kipping and Teachey said.

“To make it look like the planet is not there at all, you’ve got to get rid of that dip. You’ve got to fill in the missing starlight,” Teachey said in an explanatory video.

NASA’s Kepler space telescope uses small dips in a star’s brightness to detect planets passing in front of the star. Each planet will leave a distinctive light signature.

Engineers could shine a very bright laser or collection of lasers toward a star suspected of hosting intelligent aliens during the time Earth was passing in front of the sun from the other planet’s  perspective. Then, aliens making measurements wouldn’t see any change in solar brightness.

“I started to think about lasers,” Kipping told Space.com. “Most people might have stopped there, because the sun emits so much light — how could you possibly produce a laser beam which could ever compete with the sun? But it turns out, when you actually run through the equations, it’s really not that bad.”

“We could build this next week if we wanted to,” Teachey added.

To alter Earth’s signature as seen by an alien version of Kepler, a laser system would have to emit 30 megawatts of power for about 10 hours per year, coinciding with Earth’s passing in front of the sun, the duo calculated.

That equates to significantly less than the energy the International Space Station gathers in a year with its solar panels, Kipping said, or the energy used by about 70 homes over the course of a year. Such a laser system, either on Earth or in orbit, could charge its solar-powered batteries for most of the year and then release the high-powered blasts at just the right time, brightening when the sun’s light would normally dim.

While a laser of that intensity hasn’t been built before, the researchers said, such a cloaking system could also use multiple smaller lasers, all shining in the same direction. The alien star would be so distant that such a difference would be indistinguishable. Laser beams are tightly focused, but at greater distances, the beams will have grown large enough to require less precise aim.

Shining a laser beam toward a planet whose inhabitants might see the Earth pass in front of the sun could replace the light the Earth blocks out. This would conceivably hide the planet. Using different laser wavelengths can create other illusions with the Earth’s transit.

By varying the wavelength and strength of the beams, humans could conceal Earth from more complicated detectors. Such a “cloak” that concealed all wavelengths would take about 250 megawatts of power, with lasers blasting at different wavelengths, the researchers said. The laser strategy could also alter Earth’s signature to look like almost anything, even something that appears distinctive and artificial, the scientists said, like the New York skyline or a featureless box.

But perhaps the most interesting use, the researchers said, would be as a “bio-cloak,” which would actually use less power than would be required to totally conceal the planet. When a planet crosses its star’s face, a little bit of light passes through the planet’s atmosphere, and researchers can determine the atmosphere’s makeup based on the wavelengths of that light. By sending laser beams that are the inverse of certain wavelengths, humanity could conceivably edit out the life-generated “biosignatures” in Earth’s atmosphere, Kipping said.Advertisement

“We can actually cancel those features out, such as oxygen,” he said. “The alien civilization is going to detect your planetary transit. They’re going to detect your planetary radial velocity, but then when they ‘smell’ the atmosphere, it would not look like a tasty planet. It would just look like a dead world.”

While a planet that was fully cloaked could still be detected by other means, such as by the gravitational pull it exerts on its star, this kind of cloak would arouse less suspicion, because the planet would be there as expected, just without signs of life.

“We feel like this is the most deceptive cybercloaking you could possibly do, because then everything adds up — there’s no missing piece to the puzzle,” Kipping said. “And that would be a very difficult cloak to see.”

Kipping and Teachey laid out their thinking in a study published Thursday (March 31) in the journal Monthly Notices of the Royal Astronomical Society.

Many possibilities

Concealing Earth’s existence from extraterrestrials, or announcing its presence with an artificial light curve, would work only if humanity knew or suspected where those aliens were living. But the concept is still intriguing as scientists look out to read other stars’ light signatures and speculate about alien astronomers reading signals from Earth.

Kipping and Teachey suggested that alien civilizations could communicate with each other during transits by varying their light signatures, because individuals investigating a planet are likely to watch it as it passes in front of its star. Alien lasers could even encode information to transmit, the researchers said.

One possible next step, they added, would be to look more carefully through archival Kepler data to search for artificial signatures.

Jason Wright, an astronomer from Pennsylvania State University, recently published a paper about how scientists could identify advanced civilizations around other stars. “Alien megastructures” would dim stars more than expected, whereas lasers would tend to brighten them, but “we should look for both,” Wright told Space.com.

“The fact that Kepler looked at 100,000 stars and didn’t see much of anything along those lines suggests that that is pretty rare in the galaxy,” Wright added. “And we should look more closely to see if there are things that aren’t totally obvious.”

In terms of this particular technology on Earth, “The only time it’d be useful for us is if we had some knowledge of alien civilizations along the thin strip of the sky that would see Earth transit the sun,” he said.

Avi Loeb, who chairs the astronomy department at Harvard University in Massachusetts, told Space.com that the laser-cloaking method assumes researchers know where to look, that aliens aren’t observing from moving spaceships and that putative extraterrestrial observers are mainly investigating planets by looking for transits across stars.Advertisement

Energy demands would quickly grow as a civilization tried to hide from, or signal to, an increasing number of star systems, Loeb added. But the laser cloak is still an interesting new idea to add to the arsenal in the search for extraterrestrial life, he said.

“If there is a literature of ideas like this one, ideas that people proposed for potential signals that are artificial — the richer the literature is, the better it is,” Loeb said. “The moment we find something artificial, it will change everything. It’s good to have the imagination at work prior to seeing something unusual, so we are aware that there are possibilities beyond what we expect.”

“I don’t think anyone’s thought of this particular application before,” Wright said. “I think it just emphasizes how little energy is actually required to get someone’s attention across the galaxy.”

Source www.space.com

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Aliens & UFO's

US special forces engaged in combat with aliens during the Vietnam war

This incident happened in early 1972 during the Vietnam War. A US Special Forces group was secretly delivered at night and parachuted in an area on the Cambodia-North Vietnamese border. 

The operation was vital: to destroy a facility in North Vietnam, which, as it was possible to establish by American intelligence, was secretly overhearing top secret conversations of the US Army in South Vietnam. 

The SWAT team set up camp for the night, preparing to assault the North Vietnamese team at dawn. In the early morning, the commandos quietly crept up to the Vietnamese base, but what they saw there shocked and frightened them.

As the team got closer to the location of the North Vietnamese unit, they suddenly discovered that there was a large spherical ship that stood on three sturdy metal supports. 

The ship suddenly began to hum, causing instant sickness, dizziness, and disorientation in the US military. 

The group leader was about to issue a command to retreat when a group of strange looking humanoid creatures appeared. 

Not believing what they saw, the special forces group was even more frightened by what these creatures were doing (according to the description of the soldiers, taking into account modern data based on numerous contacts, it can be assumed that they were “gray”): the aliens got out of a large pile various parts of human bodies and placed them in large containers – arms, legs, torso, heads; this terrible list went on and on. 

Some were the remains of white people, others were black (US Army soldiers), and others looked like Vietnamese (Vietnamese soldiers from the base). 

What they saw sobered and angered the special forces and the commander gave the order to open fire – the bullets hit the bodies of the creatures, but they did not do any harm, except for one who was killed by a shot in the head. 

Several commandos were killed, and others were seriously injured by the effects of unknown weapons. Then the aliens quickly retreated into the ship and he quickly rushed into the sky,

Soon, another CIA team appeared on the scene, as one of the survivors said they were all given some kind of mind-altering drugs to try to make them forget about this incredible fight. And it worked, at least for a while.

However, in the late 1980s, two members of the special forces team who took part in that battle began to have nightmarish memories of the events of April 1972, which prompted one of them to contact many other special forces who were found and who were still alive. 

Two had already died, three were not found at all, but the rest were able to meet in August 1988 and decided that this story should be told. 

They turned to researcher and ufologist Leonard Stringfield and he published their story in his 1991 book.

The story is told in Stringfield’s UFO Crash Retrievals: The Inner Sanctum. 

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Aliens & UFO's

UK UFO case to be kept secret until 2072

The UK Department of Defense has blocked the planned release of a dossier detailing the famous UFO incident.

Back in August 1990, two tourists walking in the Scottish Highlands near Calvine, Pitlochry, witnessed a strange rhombic object hovering over the nearby landscape.

They managed to take pictures of the UFO before it flew away at significant speed.

Eager to share what they saw, the couple contacted the Scottish Daily Record and shared both their story and the photos they took.

Then the journalists shared the pictures with the UK Department of Defense.

It turned out that the tourists weren’t the only ones who saw the object – the pilot of the RAF Harrier jet also witnessed the phenomenon – again near Calvine – after being forced to investigate this UFO.

Military intelligence officers sent these images to JARIC, which is the Joint Air Intelligence and Reconnaissance Center.

It is the UK’s military center of excellence when it comes to image analysis. These intelligence officers concluded that these photographs were real and that no one had the slightest idea what they were.

Several mock ups of the photos have been made, while the real things remain hidden
Several mock ups of the photos have been made, while the real things remain classified

Thirty years later, the dossier of the Ministry of Defense, including photographs, was scheduled for declassification and publication, which is typical of such documents.

However, the release has now been postponed for another 50 years for unknown reasons.

According to the 30-year rule, the file was supposed to be released on January 1, 2021, but if the ministry gets it, it won’t be released until January 1, 2072 – an 82-year closure.

“By the time the world gets to see the file, the two witnesses will be dead. It is crazy. What are the authorities trying to hide?”

A complaint lodged under the Freedom of Information Act about the National Archives withholding the documents is now under investigation by the UK information watchdog, the Information Commissioner’s Office.

The National Archives refused to comment further. The MOD refused to comment at all.

What are the authorities trying to hide?

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Aliens & UFO's

FBI decrypted documents confirm that there are giant aliens

The topic of aliens has always attracted attention. Recently, foreign media disclosed that a declassified document released by the Federal Bureau of Investigation (FBI) once again confirmed the existence of UFOs and aliens.

FBI Declassified Document: Describes UFO and Aliens

https://twitter.com/AgentApplebutt3/status/1303403903585718273?ref_src=twsrc%5Etfw%7Ctwcamp%5Etweetembed%7Ctwterm%5E1303403903585718273%7Ctwgr%5Eshare_3&ref_url=https%3A%2F%2Fsputniknews.gr%2Fviral%2F202009098195787-exogiinoi-gigantes-kai-onta-apo-alles-diastaseis-ereuna-tou-FBI-mila-gia-thermo-epeisodio-me-UFO%2F

The British “Daily Star” reported that earlier this year, the FBI released the decrypted documents in 1947. The 70-page decrypted report contained a “Memorandum 6751”. The person who wrote the report was an anonymous university professor.

“Memorandum 6751″ mentioned that there were flying saucers, unidentified creatures, and ” giant aliens resembling humans “.

The report stated that these aliens are like humans, “but larger in size. They are not from any planet known to people, but from the etheric.” “Ether” is a term used in ancient Greece, generally referring to the atmosphere or sky.

Sketch of flying saucer. (Pixabay.com)

There is also a description of the flying saucer in the decryption report, which refers to the fact that most of the flying saucers are loaded with alien creatures. The flying saucers have powerful radiation, are very fast, and have powerful attack capabilities.

“These flying saucers have a kind of radiant energy or light that can easily disintegrate any spacecraft that launches an attack. They can re-enter (earth) from the ether at will, or they can simply disappear from our sight without leaving a trace.”

The report states, “If one of these (flying saucers) is attacked, the attacking aircraft will almost certainly be destroyed. As far as the general public is concerned, this may lead to proximity panic and international suspicion.”

Tesla is a ” Venusian “

In recent years, due to the expiration of the confidentiality period, the FBI has published many decrypted documents on its official website, including one about the famous inventor Nicholas. Tesla (Nikola Tesla) declassified documents, caused a public heat. The document mentioned that Tesla came from “Venus” and was an “alien”.

The FBI declassified document mentioned that the famous inventor Nicholas. Tesla came from “Venus” and was an “alien”. (Public domain)

The decrypted document is called “Nikola Tesla Part03 of03”. It is the third document about Nikola Tesla decrypted by the FBI. It has 64 pages of content, some of which are blacked out and cannot be distinguished.

The remaining content that is not blacked out contains the following passage: “The people of the universe have contacted Nikola Tesla many times and told the FBI that Tesla was from Venus. Tesla was brought to the earth in 1856 to a Yugoslav couple to raise.”

The publication of this document shocked the world. Faced with a wave of discussions and doubts from netizens, the FBI did not make any response or explanation, which is even more curious.

F-18 fighters chase UFO

“The Wall Street Journal” recently reported that the non-profit organization “National UFO Reporting Center” data shows that so far this year, UFO sightings have increased by 51% over the same period last year. The center has received approximately 5,000 sightings reported.

On September 8, the United States retired Lieutenant Colonel David. David Fravor accepted the Massachusetts Institute of Technology scientist Rex. In a live webcast interview with Lex Fridman, he talked about the bizarre experience of driving an F-18 fighter jet to chase UFOs 16 years ago.

There are American pilots chasing UFOs in F-18 fighter jets. F-18 fighter data map. (Michael Dodge/Getty Images)

On November 14, 2004, a UFO was found in the waters of San Diego, California, and Frevo piloted an F-18 fighter to investigate. Both he and the pilot of the other fighter saw a white Tic Tac mint-shaped flying object.

Subsequently, the pilot Chad Underwood flew an F-18 fighter jet, caught UFO on the radar, and successfully filmed UFO video with an infrared camera.

In April this year, the Pentagon released three videos of UFOs, one of which was taken by Underwood during this operation.

12 U.S. soldiers live on alien planets

Former Minister of Defense of Canada Paul. Paul T. Hellyer once disclosed that there are aliens living on the earth and working for the US government. Many US presidents have also admitted the existence of aliens on different occasions.

In addition, some U.S. military personnel disclosed that a top-secret exchange between the U.S. military and aliens was named “Operation Zeta,” and an alien envoy came to the United States. In July 1965, 12 American soldiers secretly boarded an alien spacecraft to the planet Zeta.

Of these 12 people, 4 never returned to Earth. Of these 4 people, 2 died, 2 chose to stay on Zeta, and the remaining 8 returned to Earth 13 years later.

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