Connect with us

Aliens & UFO's

‘Laser Cloak’ Could Hide Earth from Evil Aliens

'Laser Cloak' Could Hide Earth from Evil Aliens 92

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.

'Laser Cloak' Could Hide Earth from Evil Aliens 93

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.

'Laser Cloak' Could Hide Earth from Evil Aliens 94
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.

'Laser Cloak' Could Hide Earth from Evil Aliens 95
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

Comments

Aliens & UFO's

Indians and aliens – “I was told that there are four aggressive species in the universe, and humans are one of them.”

Indians and aliens - "I was told that there are four aggressive species in the universe, and humans are one of them." 100

Dr. Ardi Sixkiller Clarke, professor emeritus at Montana State University, who is a native of the Cherokee tribe, has studied Indian stories about the “Star People” and collected stories of encounters between aliens and native Indians over the years.

Here is one of the stories she recorded, which she recorded from the words of a female elder named Tali:

I have seen star creatures all my life. The first time I was about 8 years old. I picked berries by the river. I watched the ship descend and land across the river. I crossed the river, stepping carefully over the rocks so as not to get my feet wet. I was curious; I’ve never seen anything like it.

As I approached, the door opened and I went inside. I remember that the star beings greeted me. There were two women. One combed my hair and said that I was beautiful. After that, I often met with them.

Sometimes I brought them flowers, sometimes stones. My grandmother told me that stones have a soul, and I tried to explain it to them. I don’t think they understood. But they taught me to heal with my hands. Star doctors taught me how to treat diseases with my hands. They taught my grandmother how to heal.

When my grandmother died, the star beings were very saddened and I was tasked with continuing her work and learning about herbs and healing people naturally and metaphysically.

They are light, tall and thin. They are much smarter than us, but they are interested in our development. They travel the stars and learn from others throughout the star system. They collect information about the aging process of earthlings. They are trying to understand why we die so young.

Star people live much longer than we do. The normal age for them is 1000 Earth years. They do not have such diseases as we do. Their civilization does not consume alcohol and tobacco.

They choose who they will be, their job and stay on it forever. They become experts in their field, which leads to many discoveries that improve their lives. Star physicians visit Earth constantly. They mostly watch, but all over the world there are “helpers” who serve them. Both my grandmother and I were their assistants.

Star people call themselves observers.

They weren’t cruel. I was told that there are four aggressive species in our universe. People are one of them.”

Dr. Clarke ends the story like this:

“For the next five plus years, I frequently visited the reservation to meet Tali. She remained strong and mobile until her death at 95. On the day of her funeral, several people saw a UFO appear and hover in the sky. I was one of them.”

Observers

In the stories of many people who have come into contact with representatives of extraterrestrial civilizations, there are references to the fact that they are just observers. It seems that some of these creatures are just curious observers of planet Earth, collecting data, as if some of them are carrying out scientific missions to bring information about other planets and civilizations back to their planet.

We are not alone in the universe. Perhaps one day we ourselves will become aliens for someone exploring another planet.

Can we change?

As for the fact that humans are one of the most violent species in the universe … We are empathetic beings with tremendous potential for good. We really can, but we do not change, and if you were an alien watching what is happening on our planet, you would probably be intimidated by how aggressive and cruel we are …

It is a pity that we are in a group of worlds characterized as aggressive, but I really hope that we will change. People can change, but only by standing at the edge of the abyss and realizing that if they do not change, human civilization will simply disappear. We are already on the edge of the abyss. We have actually destroyed the house we live in and the name of this house is Earth.

Humanity has only two ways – to change or die out.

Continue Reading

Aliens & UFO's

The CIA has laid out all its information about UFO’s in the public domain

The CIA has laid out all its information about UFO's in the public domain 101

The Black Vault, which publishes declassified data, has posted on its website an impressive archive of CIA documents related to UFOs. The founder of the project, John Greenwald, says that he received all the documents by official means from the hands of the organization’s employees.

And suddenly, the CIA declassified its entire database of UFOs. That is, the secret service has documents from the 1980s and everything shows that conspiracy theories are becoming a reality. Already, the “Black Vault” website contains several relevant documents, which can be downloaded by anyone.

The term “Unidentified Flying Objects” is commonly used in the documents.
Some of these may be due to light reflections or errors in the pilot instruments. However, some are objects of inquiry by the Pentagon.

The CIA claims that they have nothing else, but it is not possible to verify this statement.

It was possible to obtain information thanks to the Law on Freedom of Information, and the process itself was launched at the turn of the 70-80s of last century. 

The representatives of the special services had to admit that the public ultimately has the right to find out the secrets of the government, but the process of transferring information is not really regulated. According to Greenwald, he spent 25 years in endless meetings, disputes and bickering with the CIA, until he finally got what he wanted.

But not everything is so simple – the researcher was handed a box with about 10,000 printed sheets of very low quality. He had to scan them manually, some things could not be disassembled at all, many documents were scattered. 

“Starting about 20 years ago, I struggled for years to get additional UFO records from the CIA,” Greenwald said in an email to Motherboard. “It was like pulling teeth! I went around with them to try and do it, finally achieving it. I received a large box with a couple of thousand pages, and I had to scan them one page at a time.”

The CIA used the rather outdated .tif format, so software processing is also difficult. Ufologists don’t have to talk about a gift, it’s more like trying to get rid of garbage in order to get rid of annoying researchers. 

“Researchers and curious minds alike prefer simplicity and accessibility when they look at such data dumps,” says Greenwald. “The CIA made it INCREDIBLY difficult to use its archives in a sensible way. They offer a very outdated format (multi-page .tif) and offer largely unusable text output, which I think they intend to use as a “search” tool. In my opinion, this outdated format makes it very difficult for people to view documents and use them for any research purposes.”

However, there are also enough mysterious stories there.

Thousands of files were uploaded in the first 24 hours after release, Greenwald said. Some documents are crisp and clear, while others are almost impossible to decipher.

According to Greenwald, one of the most interesting documents in this article relates to the fact that the Assistant Deputy Director of Science and Technology passed on some serious information about UFOs to the CIA back in the 1970s. After that, it became extremely difficult to obtain information from the government about extraterrestrial phenomena.

The release of the documents comes six months before the UFO report to be released by the US government. This means that the revelations are not made at this time randomly.

In particular, intelligence experts have 180 days to formulate an official report on signs or secret aircraft near US military bases, which will be released later.

The CIA has laid out all its information about UFO's in the public domain 102

Greenwald posts the files in the Black Vault, as he claims that publishing the files is a matter of public interest and notes that citizens have a right to know.

“The public has a right to know!” Greenwald says. “When I started my research almost 25 years ago, at the age of 15, I knew there was something about this topic. Not from viral online pranks, not from secret meetings with insiders that no one has ever seen. No, this is all UFO evidence straight from the CIA and NSA. I feel like I’ve almost achieved what I set out to do – give people easy access to important material so that people can form their own opinion about what’s going on.”

The aliens are already among us.

Continue Reading

Aliens & UFO's

Trump-signed bill obliges US federal services to publish UFO contact data

Trump-signed bill obliges US federal services to publish UFO contact data 103

The incumbent president of the United States signed the government spending bill this Sunday. The bill signed by Trump, among other things, obliges the US federal services to publish data on contacts with UFOs. American magazine Newsweek told about it in its publication. This provision appears in the report of the Special Committee on Intelligence, chaired by Senator Mark Rubio. 

The document is an annex to the new Exploration Permit Act. It says that the US Secretary of Defense, the Director of National Intelligence and other officials must report on the facts of observation of aerial objects that could not be identified. They are also called “anomalous flying vehicles”. Of course, this is not only about “alien ships”.

Reports must be submitted no later than 180 days from the date of entry into force of the law. The special committee demands to include in them a detailed analysis of investigations of UFO “intrusions” into American airspace, which were conducted by the US Federal Bureau of Investigation.

The publication calls all these requirements a “request”, stating that they are not binding, since they have no legislative force.

If the executive branch fulfills this important request, the nation will finally have an objective basis for assessing the validity of this issue and its implications for national security.
– said the former director of human resources of the Senate Intelligence Committee Christopher Mellon.

The request from the special committee came after the appearance of the footage of flights of mysterious aerial objects, which were filmed by the pilots of the naval aviation in 2004 and 2015, published by the US Department of Defense.

Continue Reading
Advertisement

DO NOT MISS

Trending