Tag: message (page 42 of 121)

Are we sending aliens the right messages?


(Nasa)


bbc.com

Artist Carrie Paterson has long dreamed of beaming messages far out to the emptiness of space. Except her messages would have an extra dimension – smell.

By broadcasting formulae of aromatic chemicals, she says, aliens could reconstruct all sorts of whiffs that help to define life on Earth: animal blood and faeces, sweet floral and citrus scents or benzene to show our global dependence on the car. This way intelligent life forms on distant planets who may not see or hear as we do, says Paterson, could explore us through smell, one of the most primitive and ubiquitous senses of all.
(Wikipedia)
It is nearly 40 years since the Arecibo facility sent messages out into space (Wikipedia)

Her idea is only the latest in a list of attempts to hail intelligent life outside of the Solar System. Forty years ago this month, the Arecibo radio telescope in Puerto Rico sent an iconic picture message into space – and we’ve arguably been broadcasting to aliens ever since we invented TV and radio.

However in recent years, astronomers, artists, linguists and anthropologists have been converging on the idea that creating comprehensible messages for aliens is much harder than it seems. This week, Paterson and others discussed the difficulties of talking to our cosmic neighbours at a conference called Communicating Across the Cosmos, held by Seti (Search for Extraterrestrial Intelligence). It seems our traditional ways of communicating through pictures and language may well be unintelligible – or worse, be catastrophically misconstrued. So how should we be talking to ET?

Lost in translation?

We have always wanted to send messages about humanity beyond the planet. According to Albert Harrison, a space psychologist and author of Starstruck: Cosmic Visions in Science, Religion and Folklore, the first serious designs for contacting alien life appeared two centuries ago, though they never got off the ground.


In the 1800s, mathematician Carl Gauss proposed cutting down lines of trees in a densely forested area and replanting the strips with wheat or rye, Harrison wrote in his book. “The contrasting colours would form a giant triangle and three squares known as a Pythagoras figure which could be seen from the Moon or even Mars.” Not long after, the astronomer Joseph von Littrow proposed creating huge water-filled channels topped with kerosene. “Igniting them at night showed geometric patterns such as triangles that Martians would interpret as a sign of intelligence, not nature.”

But in the 20th Century, we began to broadcast in earnest. The message sent by Arecibo hoped to make first contact on its 21,000 year journey to the edge of the Milky Way. The sketches it contained, made from just 1,679 digital bits, look cute to us today, very much of the ‘Pong’ video game generation.  Just before then, Nasa’s Pioneer 10 and 11 space probes each carried a metal calling card bolted onto their frame with symbols and drawings on the plaque, showing a naked man and woman.

Yet it’s possible that these kinds of message may turn out to be incomprehensible to aliens; they might find it as cryptic as we find Stone Age etchings.

Antique tech

“Linear drawings of a male and a female homo sapiens are legible to contemporary humans,” says Marek Kultys, a London-based science communications designer. ”But the interceptors of Pioneer 10 could well assume we are made of several separate body parts (i.e. faces, hair and the man’s chest drawn as a separate closed shapes) and our body surface is home for long worm-like beings (the single lines defining knees, abdomens or collarbones.).”

Man-made tech may also be an issue. The most basic requirement for understanding Voyager’s Golden Record, launched 35 years ago and now way out beyond Pluto, is a record player. Aliens able to play it at 16 and 2/3 revolutions a minute will hear audio greetings in 55 world languages, including a message of ‘Peace and Friendship’ from former United Nations Secretary General Kurt Waldheim. But how many Earthlings today have record players, let alone extraterrestrials?
(Nasa)
Our sights and sounds of Earth might be unintelligible to an alien audience (Nasa)



Time capsule

Inevitably such messages become outdated too, like time capsules. Consider the case of the Oglethorpe Atlanta Crypt of Civilization – a time capsule sealed on Earth in 1940, complete with a dry martini and a poster of Gone With the Wind. It was intended as a snapshot of 20th Century life for future humans, not aliens, but like an intergalactic message, may only give a limited picture to future generations. When, in 61,000 years, the Oglethorpe time capsule is opened, would Gone With The Wind have stood the test of time?


(Nasa)
This message was taken into the stars by Pioneer - but we have no idea if aliens would be able to understand it (Nasa)

Kultys argues that all these factors should be taken into account when we calculate the likelihood of communicating with intelligent life. The astronomer Frank Drake’s famous equation allows anyone to calculate how many alien species are, based on likely values of seven different factors. At a UK Royal Society meeting in 2010 Drake estimated there are roughly 10,000 detectable civilisations in the galaxy. Yet Kultys points out that we should also factor in how many aliens are using the same channel of communications as us, are as willing to contact us as we are them, whose language we hope to learn, and who are physically similar to us.

Another barrier we might consider is the long distance nature of trans-cosmos communication. It means that many years ‒ even a thousand ‒ could pass between sending a message and receiving a reply. Paterson sees romance in that. “Our hope for communication with another intelligent civilisation has a melancholic aspect to it. 
We are on an island in a vast, dark space. Imagine if communication… became like an exchange of perfumed love letters with the quiet agony of expectation... Will we meet? Will we be as the other imagined? Will the other be able to understand us?”

Ready for an answer?

Anthropologist John Traphagan of the University of Texas in Austin has been asking the same question, though his view is more cautious. "When it comes to ET, you'll get a signal of some kind; not much information and very long periods between ‘Hi, how are you?’ and whatever comes back. We may just shrug our shoulders and say 'This is boring’, and soon forget about it or, if the time lag wasn't too long, we might use the minimal information we get from our slow-speed conversation to invent what we think they're like and invent a kind concept of what they're after.”

(20th Century Fox)
The aliens in Independence Day (1996) did not come in peace (20th Century Fox)
While we have been sending out messages, we have not been preparing the planet for what happens when we get an interstellar return call. First contact could cause global panic. We might assume those answering are bent on galactic domination or, perhaps less likely, that they are peaceful when in fact they’re nasty.

Consider how easy it is to mess up human-to-human communications; I got Traphagan’s first name wrong when I e-mailed him for this article. An apology within minutes cleared up the confusion, yet if he had been an alien anthropologist on some distant planet it would have taken much longer to fix. He later confessed: "I could have thought this is a snooty English journalist and our conversation might never have happened."

Even if Earth’s interstellar messaging committees weeded out the typos, cultural gaffes are always a possibility. These can only be avoided by understanding the alien’s culture – something that’s not easy to do, especially when you’ve never met those you’re communicating with.

Rosy picture

So, what is the best way to communicate? This is still up for grabs – perhaps it’s via smell, or some other technique we haven’t discovered yet. Clearly, creating a message that is timeless, free of cultural bias and universally comprehensible would be no mean feat.


But for starters, being honest about who we are is important if we want to have an extra-terrestrial dialogue lasting centuries, says Douglas Vakoch, director of interstellar message composition at Seti. (Otherwise, intelligent civilisations who’ve decoded our radio and TV signals might smell a rat.)

(Nasa)
The golden discs aboard the Voyager spacecraft require aliens to understand how to play a record (Nasa)

“Let's not try to hide our shortcomings,” says Vakoch. “The message we should send to another world is straightforward: We are a young civilisation, in the throes of our technological adolescence. We're facing a lot of problems here on Earth, and we're not even sure that we'll be around as a species when their reply comes in. But in spite of all of these challenges, we humans also have hope – especially hope in ourselves."


Yet ultimately what matters, says Paterson, is that they stop and consider the beings who sent them a message; the people who wanted to say: “Here are some important things. Here’s our DNA, here is some maths and universal physics. And here is our longing and desire to say “I’m like you, but I’m different.”

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Galactic Federation of Light Archangel Raziel November 12 2014

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Has Amelia Earhart’s plane finally been found? Not so fast


 


Excerpt from

A small group of wreckage hunters purports to have found a bit of Earhart’s Lockheed Electra aircraft. It’s a good story, but critics of the find are more vocal than ever.


A metal sheet, some small bones and an “ointment pot” may be the final artifacts of Amelia Earhart’s failed 1937 journey around the world, if a small group of wreckage hunters is to be believed. They could also be the remains of some other plane, a turtle and trash. 

But the International Group for Historic Aircraft Recovery (Tighar), which first found the warped bit of aluminum on a 1991 trip to the tiny atoll of Nikumaroro, in the Republic of Kiribati, says the 19in-by-23in slab has to be part of Earhart’s Lockheed Electra aircraft, which disappeared while she was flying over the Pacific. 

Tighar’s executive director Ric Gillespie made headlines this week by announcing “new research” into the 1991 fragment that he says answers earlier critics and proves it is from Earhart’s plane. 

The story he proposes is not implausible: the metal’s rivets don’t match with the Electra’s design, but that’s because because it’s actually a patch made to repair the aircraft after a bad landing in Miami, earlier on Earhart’s trip. Gillespie’s team managed to find a Miami Herald photo from 1937 which shows, over the place where a window should be, a particularly shiny piece of metal. In fact, a lab tested the metal back in 1996 and found it to be “essentially the same” 24ST Alclad aluminum that was to cover most aircraft of the 30s, including Earhart’s Electra. Gillespie says that “the patch was as unique to her particular aircraft as a fingerprint is to an individual … [the aluminum] matches that fingerprint in many respects”.
Metal fragment believed to be from Amelia Earhart's plane
The aluminium fragment believed to be from Amelia Earhart’s aircraft.Photograph: Tighar/Reuters

Under Gillespie’s theory, Earhart made it to the island, sent radio signals “for at least five nights before the Electra was washed into the ocean”, and eventually died there.

But Gillsepie’s been here before, and his critics are not quiet, with one saying: “Everybody should have facts to back up [their] opinions, and Mr Gillespie, well, he doesn’t.” (A second, more concisely, says: “He’s very creative.”) After discovering the metal, Gillespie gave a 1992 press conference to say that “every possibility has been checked, every alternative eliminated … We found a piece of Amelia Earhart’s aircraft.”

Objectors immediately pointed out that he had not checked the fragment’s rivets, which did not match Earhart’s Electra. Now, 22 years later, the photo could indeed explain the discrepancy – but Gillespie still lacks a wreck to compare the pattern to. As a substitute, Gillespie’s team went to a Kansas facility that’s restoring an Electra and claims to have found – by holding the patch up alongside the restored plane – that the rivets seemed consistent with the pattern. No independent researchers have confirmed their findings.

To be fair, Tighar realizes they know less about the scrap than they’d like: “If the artifact is not the scab patch from NR16020, then it is a random piece of aircraft wreckage from some unknown type involved in an unknown accident that just happens to match the dozens of material and dimensional requirements of the patch.”

Considering the vastness of the Pacific Ocean and the sheer amount of wreckage scattered across it over the past century, this actually seems pretty reasonable, but Tighar doubles down on its implication of certainty: “[That would mean] this incredibly specific, but random, piece of debris just happened to end up on Nikumaroro, the atoll where so much other evidence points to Earhart.”

What evidence does Tighar present? In 2011 they tested three bones found near a turtle shell, which could perhaps have been human or that of a turtle. DNA tests were inconclusive. (Gillespie says “the door is still open for it to be a human finger bone.”)

Gillespie told the Miami Herald earlier this year that “the key to it is her final message, where she says ‘line of position 157 dash 337’ … That’s a line that Noonan calculated from the sunrise, running 337 degrees to the north-west and 157 degrees to the south-east. And if you follow it far enough, there are two deserted islands on it, McKeon Island and Gardner Island.” 

It’s a good story, just like the one ex-marine Floyd Kilts used to tell about how a tribesman told him about a partial human skeleton and a woman’s shoe, which ended up with a British official and disappeared afterward. (Micronesians settled on the island a year after Earhart vanished.) But despite all the story and circumstantial evidence, no expedition in the past 70 years has found the Electra on or near either island.

But Tighar of course thinks it might. It found a “sonar streak” 600ft below the surface “the right size, the right shape … in the right place to be part of the Electra”, which the group has so far had neither the time nor funding to investigate. Gillespie admits it could also be part of a reef, a geological formation or any number of things once lodged into the seabed and now drifted away. He intends to explore the site in a 2015 expedition. Whether he turns up with Earhart’s lost Electra or something else entirely, he will have a new story.

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