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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

Alien Life Might Be so Advanced That It’s Indistinguishable From the Laws of Physics

We’ve never seen aliens … or have we? No, Roswell conspirators, not now. Please sit down. We’re talking in multitudes of higher complexity.

Try this on: Maybe aliens are the puppet masters behind the laws of physics. Or maybe aliens literally are physics. Just when we thought we had a grasp on the fundamental constants of the universe, boom, dark matter rips off the mask, and it’s E.T. Too crazy to be true? Prove it.

Related Video: The Physics of Life

Magic, Shmagic

British science-fiction writer and futurist Arthur C. Clarke famously formulated three adages known as Clarke’s three laws. Of them, number three steals most of the spotlight: “Any sufficiently advanced technology is indistinguishable from magic.”

Consider cavemen for a moment. If you hand-delivered an iPhone to an ancient cave-dweller, he’d be dumbfounded at the “magical” device. But give it some time, and Fred Flintstone would probably start tweeting and Snapchatting. Now, let’s crank ‘er up a notch. Imagine technology so advanced, it’s not even recognizable as technology, or magic, for that matter. It could be so advanced that calling it magic would be an insult. Sorry, David Blaine.

One-Word Explanation for Anything: ALIENS

This isn’t all some far-out psychedelic rambling. (Even if it were, we’d still be here for it.) As bonkers as it may sound, Scharf argues that his thought experiment could explain the most mysterious cosmic phenomena. Take our dear ol’ elusive friend, dark matter. This unseen stuff makes up 27 percent of the observable universe, but virtually everything else about it is famously unknown. Based on the assumptions and predictions of cosmologists and astronomers, dark matter could be much more complicated than we’re ready to understand. Inconsistencies between dark matter models and observations only back that up.

With all this apparent complexity, Scharf says it wouldn’t be outlandish to think that technologically advanced life is stored there. “What better way to escape the nasty vagaries of supernova and gamma-ray bursts than to adopt a form that is immune to electromagnetic radiation? Upload your world to the huge amount of real estate on the dark side and be done with it.” The inconsistencies might just be a result of being artificially tampered with.

You can run a similar exercise with the elusive dark energy, which makes up roughly 68 percent of the universe. The universe didn’t start expanding at an accelerated rate until a cool 5 billion years ago, and scientists don’t know why. Well, well, well, how convenient.

According to Scharf, an advanced alien civilization could have bumped the speed up so they wouldn’t have to live in such a crowded, hot mess of a universe. “Any very early life in the universe would have already experienced 8 billion years of evolutionary time by the time expansion began to accelerate,” he writes. “It’s a stretch, but maybe there’s something about life itself that affects the cosmos, or maybe those well-evolved denizens decided to tinker with the expansion.”

Just Sayin’

Note that the ideas Scharf is putting out there are just that: ideas. None of this is peer-reviewed or even testable (YET). This is just one brave astrobiologist on a mission to brainstorm the boundaries of theoretical possibility and make you paranoid beyond all reason that every inescapable, so-called law of “nature” affecting you is extraterrestrial intelligence. We’re just having fun, kids!

Scharf signs off with a mind-bender: “Perhaps hyper-advanced life isn’t just external. Perhaps it’s already all around. It is embedded in what we perceive to be physics itself, from the root behavior of particles and fields to the phenomena of complexity and emergence. In other words, life might not just be in the equations. It might be the equations.”

Want more from Carl Scharf? Check out this book “The Copernicus Complex: Our Cosmic Significance in a Universe of Planets and Probabilities.” 

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Aliens & UFO's

A pilot of the Turkish Airlines company records a UFO from the cabin

It has always been said that the only people who see UFOs are anonymous people, who get carried away by the stereotype that has been perpetuated by the world of science fiction, leading to erroneous identifications of what they have witnessed. But the reality is quite another, UFOs are sighted by men and women from all walks of life, and from all social and economic classes: from chefs to bankers, cleaning staff to surgeons, writers and politicians. So, it should not surprise us that those who spend their working days in the heavens also witness the so-called anomalous aerial phenomena . In fact, the cases of encounters of pilots with UFOs are considered more credible than any other.

And if we have to mention a particular case, the first thing that comes to mind is the flight 1628 of Japan Air Lines was, a UFO incident that occurred on November 17, 1986. The crew of the Japanese cargo plane Boeing 747- 200F, which was en route from Paris to Narita International Airport, near Tokyo, saw a UFO, in addition to being detected by the radars. The meeting lasted approximately seven minutes and the crew, made up of the captain, the co-pilot and the flight engineer, assured that two spacecraft stopped in front of the plane while emitting very intense lights, to such an extent that they felt the heat in the interior cabin.

The witnesses had experience and lots of flight hours, including Captain Teraushi Kenju, a former Japanese fighter pilot with more than 29 years of flight experience. Undoubtedly, this incident is one of the best known UFO cases in the history of aviation, but it is not the only one. Now, a stunt pilot has recorded a UFO flying at high speed from his cabin during a flight.

The Turkish UFO

Turkish captain Atilla Şentürk, from the Turkish Airlines area company, saw the strange object during a commercial flight from Istanbul to Cologne on May 10 . Şentürk recorded the white object moving in circles at an “incredible speed” from his plane. Half tricks have published the video, which shows the UFO emitting flashes of light on the horizon. Due to its distance from the plane, the object can not be clearly seen.

“During the flight from Germany to Cologne, we saw an incredibly bright object at high altitude ,” Şentürk told CNN in Turkey . “It was not a satellite or a star.”

The pilot added that the object quickly disappeared moments after it was recorded. Although the media usually report on UFO sightings, the pilot declared that he himself had never seen anything like it in his entire career.

“It was the first time I saw something like this,” added Şentürk. “He was very close to us and very bright despite the sun. I had never seen anything fly so fast. “

In addition to the captain, the flight cabin supervisor and the First Officer also witnessed the object of unknown origin . Since the images were taken by a pilot of a commercial plane, the Turkish media have echoed the unusual encounter. And how could it be otherwise, social networks have also reacted. There are many who have been surprised with what you see in the video, ensuring that the UFO was following the trajectory of the plane.

They also recalled that an incident similar to 2013 could have occurred, when a Boeing 757 from the Air China company hit an unidentified flying object . On that occasion, the encounter occurred at an altitude of 26,000 feet only 20 minutes after the plane took off.

UFO pilot - A pilot of the Turkish Airlines company records a UFO from the cockpit UFO from the cabin

There were no injuries between the passengers and the crew, but the plane was forced to make an emergency landing at the Shuangliu airport in China. Although most surprising of all was that when landing, the operators saw the aircraft visibly damaged. For the skeptics, both the sighting of Şentürk and similar ones are simply wrong identifications, completely forgetting that the witnesses are experienced pilots with a large number of flight hours.

What is your opinion about the video? Is it a UFO chasing the plane? Or do you have another explanation?

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Black and red UFO is spotted and terrifies driver in Nashville

SPOOKY footage shows a blank triangular UFO with red flashing lights hovering over a car as the terrified driver can be heard bursting into tears and saying”f**k, f**k”.

The driver then leaves her husband a series of panic-stricken voice messages, shared with Sun Online, in which she tells him “Baby I’ve just seen a spaceship.”

The motorist spotted the strange black triangle with red lights underneath it while driving home from a dance class in Nashville, Tennessee, in the USA.

She was recording herself singing on her phone when she decided to point the camera towards the road ahead.

Suddenly three red lights appeared in the distance and started moving slowly towards her car.

As they got closer, the woman sees them and she can be heard whispering “f**k, f**k” before she bursts into tears in sheer panic – and tried to call her husband.

The driver told Sun Online: “I kept looking in my back seat just to make sure I was still alone in my car. I was terrified but my husband wouldn’t answer his phone.”

She described the craft as a large black triangle covered in red lights, which was “shiny and had a very sleek design”.

She explained: “I was driving home from Nashville, I was alone and I was singing. All of a sudden it just seems to appear out of nowhere and it was hovering over my car.

“It was probably the size of three cars but it was a triangle. There was no sound.

“It was black and had a very nice sleek design.

“The red lights where all nicely placed in rows, but there were some line shape lights. The material was shiny.

“The brightness of the lights weren’t extremely bright because I don’t remember the red being reflected anywhere or like inside my car. Unless it was too far away for it to make my car reflect red light.

“I started to cry and my initial thought was confusion because I was wondering what a device like that is doing out here and so low to the ground and because I didn’t know what I was looking it.

“It was completely foreign until I had the realisation that it was absolutely a UFO.”

After the disturbing incident, she frantically tried calling her husband but she couldn’t get through to him.

In a series of panic-stricken voicemails, she pleads: “Baby please answer me, I just saw a spaceship. I’m scared, I just saw a spaceship. I saw it clearly, please answer me.

“It had three points, it was a triangle and it was in the sky.”

In another voice message, realising she had inadvertently filmed the UFO, she says: “I have a video of it, I was recording as I was singing and I got it, I got it. I’m going to send it to you ok.”

Clearly frustrated by not being able to get through, she adds: “Why don’t you ever answer when I need you the most? What the f**k dude?”

The witness said: “I stopped recording so I could call my husband and get help or let him know what was happening because it felt like I was going to be taken. I sped up and all I could focus on was getting away from it.

“When I looked back the first time it was there then I looked again and it was gone, maybe it disappeared.

“I kept imagining that an actual alien would just appear on my back seat so I kept looking in my back seat just to make sure I was still alone in my car. I was terrified and my husband wouldn’t answer his phone. Until I sent him some voice notes.”

Eventually her husband texted her back: “Holy sh*t dude.”

Source: The Sun

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