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[aetius320]

@vod

+1, bien joué

et je rajouterai même que le signal wow a été reçu en 1977 alors que la D58-4 a été reçu en 1967. Ce qui exclu que le contenu de cette lettre ait été formé autour de la médiatisation de wow.

Très intéressante cette piste.

[-Vod-]

En fait, apres avoir relu la première page, je me rend compte que SETI écoutait specifiquement la fréquence 1420,4 Mhz depuis 1959.
Du coup c'est beaucoup moins troublant que cela soit dans cette fréquence qu'on ai capté quelque chose...je me suis emballé trop vite désolé.

[dificultnspa]

davidkirkpatrick.com

SETI to release radio data on search for extraterrestrial life

davidkirkpatrick @ 4:05 pm

Hot from today’s inbox, news from SETI that tremendously expands the brainpower brought to bear on its massive collection of radio telescope data.

The release :

SETI Institute Announces Public Availability of Radio Telescope Signal Data in Latest Milestone for Director Dr. Jill Tarter’s 2009 TED Prize Wish to Enlist all Earthlings in Search for Extra-terrestrial Intelligence

MOUNTAIN VIEW, Calif., April 19 /PRNewswire/ — SETI Institute, an interdisciplinary scientific organization that explores the nature of life throughout the universe, announced that starting today it will make large quantities of astronomical radio telescope data accessible to astronomers and other scientists as part of an effort to build a global community of searchers for evidence of extra-terrestrial intelligence.

Today’s announcement represents the latest milestone in SETI Institute’s mission to facilitate mass collaboration in the search for civilizations beyond earth.  The radio telescope data will be released by setiQuest, a program formed in 2009 after SETI Institute Director Dr. Jill Tarter was awarded the 2009 TED Prize, whose benefits included $100,000 and the assistance of the global TED community to help realize her “One Wish to Change the World.”  Accepting the prize, Dr. Tarter asked the TED community to “empower Earthlings everywhere to become active participants in the ultimate search for cosmic company.”

After months in development, the setiQuest program has reached the point where it is able to invite the global scientific community to access radio signal data collected by SETI Institute’s Allen Telescope Array (ATA).  Commissioned in 2007, the Allen array is operated jointly by SETI Institute and the University of California at Berkeley. It is a “Large Number of Small Dishes” (LNSD) telescope array designed to conduct surveys for both conventional radio astronomy by the university, as well as for SETI Institute’s research.

SETI Institute analyzes the ATA radio data in real time with special software to detect technological signals from a distant extra-terrestrial civilization.  The process is analogous to listening to one hundred million radios, each tuned to a different channel and attached to an antenna that is highly sensitive to just one millionth of the sky, to find faint signals.

To date, SETI Institute’s methods have focused on the search for what are called narrowband signals. One of the benefits of opening the ATA data to the global scientific community is to invite development of techniques to analyze broadband signals.

The radio telescope data will be made available through setiQuest’s website, www.setiquest.org, in the form of files containing streams of data samples from specific targets in space. Data can be accessed by registered participants in the setiQuest program.  SETI Institute hopes that by making the ATA data widely available, scientists around the world will develop new and innovative ways to process the massive quantities of radio signals streaming from space every second.

SETI Institute search programs have processed data in real time and discarded it shortly after the observation. They are capturing these new data sets to invite the public to expand the search. Now, setiQuest will provide a day’s worth of ATA data each week, and will leave the data on its website for up to six months.

While astronomers and specialists with experience in digital signal processing (DSP) may by the likely initial population of scientists and technologists with an interest in setiQuest, the program welcomes scientists and technologists of all disciplines.  Those interested in learning how they can be part of the setiQuest project can find more information at www.setiQuest.org.

For more details of the progress of Dr. Tarter’s TED Prize wish, visit http://www.tedprize.org/jill-tarter/.

About SETI Institute

The mission of SETI Institute is to explore, understand and explain the origin, nature and prevalence of life in the universe. At SETI Institute biologists, physicists, chemists, astronomers, ecologists, planetary scientists, geologists, engineers, technologists, and educators join forces in the quest to find life elsewhere. This includes the search for potentially inhabited planets in our Solar System and beyond, laboratory and field investigations of the origins and early evolution of life, and studies of the potential of life to adapt to future challenges on Earth and in space. For more information about SETI, visit www.seti.org.  For information about setiQuest, visit www.setiquest.org.

Source: TED Conferences

[dificultnspa]

SETI 2060, Do We Make Contact By Then?
Analysis by Ray Villard
Mon Sep 20, 2010 08:22 AM ET

This month the National Radio Astronomy Observatory’s Green Bank Science Center is celebrating the 50th anniversary of the modern day search for extraterrestrial intelligence (SETI).



In 1960 a young radio astronomer, Frank Drake, undertook a bold and visionary experiment: He used the 85-foot dish antenna at Green Bank, W.V.  to listen for radio signals from extraterrestrial civilizations.

Drake recently retired from the SETI Institute in Palo Alto, Calif., without finding his aliens. He’s not alone.  As early as the turn of the last century Nicola Tesla and the father of radio, Guglielmo Marconi, were independently listening for signals from Martians.

This half century of searching among the stars leaves me a little chagrinned because I’ve accused UFO believers of coming up equally empty-handed in over 60 years of chasing flying saucer “ghost stories.” After decades, both enterprises have absolutely zero, zilch, nothing of any consequence to convince us of life elsewhere in space.



Even worse, the SETI effort has suffered collateral damage from the UFO silliness.

Still, it has persisted through lean times. SETI research has been largely living on private funding ever since NASA was forced to cut off money under Congressional mandate in the early 1990s.

I've accused the UFO folks of pursuing pseudo-science. But at some point I have to wonder if SETI is becoming a pseudo-religion. To be fair the program is absolutely scientific, but it has come up with nothing to date. So it is sustained purely by a belief that “they are out there, somewhere.” Or rather, more precisely, radio and optical searches test a neo-Copernican hypothesis that intelligent life is a condition of the universe.

So where will SETI be 50 years from now? What will popular articles be saying on the 100th anniversary of Drake's Project Ozma? Any prediction I make will almost certainly turn out dead wrong. But here’s some simple conjecture along with a few very extrapolations that can be made from our current state of understanding -- or should I say current state of ignorance:


 
The Astronomical World of 2060

1. The universality of life is established
A series of ever larger space telescopes have assembled a catalog of dozens of inhabited planets lying within several hundred light-years of Earth. The closest worlds are imaged by an immense constellation of interlinked free-flying optical mirrors that form a “structureless space telescope.”  Three-dimensional holographic projection posters in elementary school classrooms show these worlds rotating as virtual globes with clouds, seas and continents.
Microbes are found on Mars, Europa and Enceladus. An exotic cryolife is uncovered on Titan. We realize that Genesis II has taken place. Specimens returned by astronauts and outer solar system robots are on Earth in class 5 biocontamination labs.
Other scientists take a giant leap toward understanding life as a universal property of matter by successfully making a fully artificial life form in the lab. It reproduces, grows, and follows Darwinian evolution -- all without the benefit of genes refined over billions of years of evolution.
   


2. Extraterrestrial intelligent life manifests itself

Immense radio telescope arrays, many kilometers in area are robotically constructed on the radio-quiet lunar far side. They push deep into the Milky Way galaxy to sample billions of stars.  The arrays also monitor the nearest inhabited exoplanets to eavesdrop on any telecommunications leaking into space.

With these exponentially growing capabilities, detection is made at last of an artificial radio beacon. It comes from the crowded core of our Milky Way, in the direction of the constellation Sagittarius. It is first overlooked as an oddball pulsar emission. Information content is minimal because this is just an acquisition beacon painting stars on a routine basis.

Overnight, humanity realizes that we are not alone in the universe. There is shock and awe -- and some skepticism by the world’s population. Cultural evolution is steered onto a different trajectory at this realization. This civilization game-changer overshadows sociology, religion, education and politics.

The public grows disinterested in the discovery when they learn that the beacon was broadcast thousands of years ago and apparently  contains minimal information. (Depending on the state of science education in the United States by then, 10 to 20 percent of the population dismisses the signal as a government hoax.)

Major international powers engage in a radio telescope “Arms Race” to build the biggest possible facility for harvesting more transmissions. Soon, similar beacons from other comparably advanced civilizations are recognized as being artificial.


 
Finding and processing SETI transmissions becomes a bona fide science data collection program rather than exercise in hypothesis.  Astronomers scramble to apply for research grants, and dream about receiving the Noble Prize.

Some signals are dug out of radio archival data. This kind of “hello we are here” message turn out to be surprisingly common along the galactic plane. Technological civilizations at a particular state of evolution apparently converge on similar beacon strategies that are energy-frugal and efficient.

In the absence of an exclusively directed transmission toward Earth, SETI astronomers diminish expectations of finding altruistic aliens wanting to share their advanced knowledge. Maybe the extraterrestrials are satisfied with simply broadcasting interstellar "tweets."

There is a lively debate among politicians and scientists as to whether we should respond to the signals. Who speaks for Earth? And what can we say to extraterrestrials?

A few long-lived alien civilizations patiently wait thousands of years for a return receipt on the transmissions before they devote more energy and to bandwidth into broadcasting an  "interstellar Wikipedia" at targeted civilizations.

There is speculation that some beacons may simply be sentries that continue transmitting long after their builders have lost interest or died off as a civilization, as envisioned in James Gunn’s 1972 sci-fi story, “The Listeners.”


 

Alternative Futures

My modest scenario makes the assumption that radio will be the preferred medium for interstellar communication, though a similar strategy could play out at optical wavelengths using laser beacons.

By 2060 traditional SETI programs could be sidetracked or preempted if:
An alien artifact is found in the solar system. It is simply leftover debris of a probe that visited over geologic time. The point of origin is a complete mystery. But isotopic analysis reveals the artifact was definitely built around another star. After intensive analysis the relic is put on public display. But it remains vastly more inscrutable that the Easter Island statures. Where are the builders? What was their purpose in visiting the solar system? Will they ever come back?
 Huge visible light or infrared telescopes stumble upon a strange phenomenon around a star. Scientists strictly apply Occam’s Razor to explain it. But the observation cannot easily be explained away as natural.  The debate about artificial origin – such as a Dyson sphere structure -- remains unsettled by 2060.
A powerful neutrino beam is detected. Astrophysicists conclude there is no known natural mechanism for making neutrinos in only this energy range, and so it must be artificially produced and aimed at us.




No SETI Success by 2060?

After a century of searching for radio or optical transmission perhaps nothing is found. SETI astronomers mull over the Drake Equation and conclude that a fundamental assumption about intelligence in space is missing. This gnaws at the brightest minds and theoreticians of 2060.

The Fermi Paradox is revisited. The conclusion is that biological intelligence -- with a curiosity to communicate -- is transitory at best. This does not rule our intelligent machines as successors to biological life. But these entities -- which roam the galaxy at will -- have no interest in talking to biological matter, any more than we tap out a coded message to pond scum.

[dificultnspa]

Strange Signal Comes From Alien Planet, Scientist Says

By Denise Chow

Published October 11, 2010 | Space.com


The recent discovery of Gliese 581g, an alien planet in the habitable zone of another star, has been an exciting development for scientists probing the galaxy for signs of extraterrestrial life. At least one claim of a possible signal from the planet has already surfaced – and been met with harsh skepticism among the science community.

Following the Sept. 29 announcement of the discovery of Gliese 581g, astronomer Ragbir Bhathal, a scientist at the University of Western Sydney, claimed to have detected a suspicious pulse of light nearly two years ago, that came from the same area of the galaxy as the location of Gliese 581g, according to the U.K.'s Daily Mail online. [Alien Planet Gliese581g: FAQ]

Bhathal is a member of the Australian chapter of SETI, a non-profit scientific organization that is dedicated to research, exploration and education in the field of astrobiology.

"Whenever there's a clear night, I go up to the observatory and do a run on some of the celestial objects," Bhathal told the Daily Mail. "Looking at one of these objects, we found this signal. We found this very sharp signal, sort of a laser lookalike thing which is the sort of thing we're looking for – a very sharp spike. And that is what we found."

Still, there are some scientists who are skeptical of Bhathal's assertion.


"I know the scientist, and when he first announced it, I asked him for the details, and he wouldn't send them to me," astronomer and SETI pioneer Frank Drake told SPACE.com. "I'm very suspicious."

Drake is credited with conducting the first search for signals from extraterrestrial intelligences 50 years ago as part of what was then called Project Ozma. He coined the famed Drake Equation to calculate the number (N) of alien civilizations with whom we might be able to communicate.

Further study would perhaps confirm or deny the supposed observation, but Drake thinks that the claim is likely a dubious one.


...

[Tatan]

Un signal SETI anormal qui pourrait provenir d’une intelligence Extraterrestre ? (02/11/11)



APOD de la NASA ne sait avec certitude ce qui a causé ce signal. Il y a une faible possibilité que ça puissent provenir d’une intelligence extraterrestre.

Personne ne sait de façon certaine ce qui est à l’origine de ce signal. Il y a une possibilité, mince cependant, pour qu’il provienne d’une intelligence extraterrestre.

Les couleurs vives sur fond bleu indiquent qu’un signal anormal a été reçu ici sur Terre par un radiotélescope impliqué dans la recherche d’intelligence extraterrestre ( « Search for ExtraTerrestrial Intelligence » en anglais dont l’acronyme forme SETI).

Des recherches sur ces signaux sont en cours par plusieurs groupes, dont des membres volontaires de la ligue SETI. Sur le graphique ci-dessus, l’axe vertical correspond au temps et l’axe horizontal aux fréquences. Bien que ce fort signal n’ait jamais été identifié de façon certaine, les astronomes ont reconnu en lui de nombreuses caractéristiques d’une création humaine. Dans ce cas, la possibilité la plus probable serait que le signal provienne d’une modulation inhabituelle entre un satellite GPS et une source terrestre non identifiée.

De nombreux signaux insolites en provenance de l’espace demeurent non identifiés. Cependant jusqu’à présent, aucun signal n’a été assez fort ou n’a duré assez longtemps pour être identifié sans ambiguïté comme provenant d’une intelligence extraterrestre.

source : ici

[Tatan]

Une application pour traquer les extraterrestres

Le SETI, programme américain de recherche d'une intelligence extraterrestre, vient de lancer une application pour aider les pros à trouver de la vie ailleurs.

Les milliers de chasseurs d'OVNIs amateurs vont enfin pouvoir mettre leur pierre à l'édifice de la recherche de vie extraterrestre. Ils auront à leur disposition une application pour smartphones qui leur permettra de chercher manuellement des schémas qui se répètent dans des données radios captées par le télescope Array Allen, en Californie.



L'application s'appelle «SetiQuest Explorer» et permet donc de mêler la recherche amateure à la recherche professionnelle, comme le rapporte le site «Clubic.com». Le but est de confier à un maximum d'être humains ce que les ordinateurs ont encore de la peine à analyser. «Un ordinateur n'est pas très bon dans la recherche fortuite, alors que l'humain l'est», explique Jill Tarter, responsable du SETI.

La version Android 2.2 est disponible depuis jeudi et tous ceux qui désirent y participer peuvent s'inscrire sur le site de SetiQuest. Des versions supérieures seront proposées ces prochaines semaines et la version iPhone sera disponible cet été. Alors à vous de jouer!

source : ici

[Tatan]

Seti cesse ses écoutes vers les extraterrestres

L'Allen Telescope Array (ATA) a été temporairement mis en sommeil, faute de moyens financiers pour assurer son fonctionnement.

Seti privé de son principal moyen d'écoute
La décision d'arrêter les écoutes radio de la Galaxie en quête de signaux artificiels est un rude coup pour le programme Seti de recherche d'intelligence d'extraterrestre : l'ATA était son outil d'observation dédié.

Seule la maintenance du radiotélescope, installé au nord de la Californie, reste assurée. Seti devra parvenir à se greffer sur le temps d'observation d'autres instruments pour continuer ses écoutes.

Des ambitions déjà amputées
L'ATA devait à terme être constitué de 350 antennes radio de 6,1 m de diamètre pour écouter les astres simultanément. Seules 42 paraboles ont vu le jour en 2007, grâce au mécénat initial de Paul Allen, cofondateur de Microsoft.

Depuis, la seule exploitation de l'ATA pour Seti coûte 2,5 millions de dollars par an. Beaucoup trop dans un contexte de réduction drastique des financements publics de l'État de Californie et de la National Science Foundation.

À la recherche de fonds
La survie de Seti repose plus que jamais sur les dons privés. Une campagne de levée de fonds a ainsi été lancée pour financer une recherche de deux ans centrée sur les 1235 planètes découvertes par Kepler.

Autre piste, la vente de services à l'US Air Force pour surveiller les débris orbitaux risquant d'endommager les satellites de la Défense américaine.

Ciel & Espace également à l'écoute
Pour en savoir plus, retrouvez les dossiers consacrés au programme Seti dans le numéro de janvier 2011 de Ciel & Espace (50 ans de Seti : le point sur les écoutes extraterrestres) et dans celui de juillet 2010 (Extraterrestres : Faut-il leur parler ?).

Source ici

[Nemo492]

OK, c'est seulement le coup de griffe habituel de Ciel & Espace??
La vraie Source - http://www.seti.org/page.aspx?pid=1581
parle seulement d'un nouvel appel pour le financement par des personnes privées,
et d'une réduction des recherches en attendant.
Un bon moyen de réveiller/remotiver les donateurs.

[Karmayata]

SETI = attrappe-nigauds

Allez... des sous... des sous... aidez-nous à rechercher des signaux ET... un jour peut-être nous saurons s'ils existent...

[Belzian]

Navré pour le raccourci, mais on dirait l'ARC dans ses beaux jours ...

[kithia]

SETI = attrappe-nigauds

[Bimap]

Ils en parlaient également ce matin dans Direct Matin (oui ok...), disant que la grosse quarantaine de télescopes de l'ATA avaient cessé de fonctionner pour le SETI du fait des frais de fonctionnements trop importants, et du manque de dons. Et Direct Matin d'ajouter que SETI n'a rien trouvé depuis sa création, mais qu'ils souhaitaient "écouter" à l'avenir les exoplanètes découvertes par Kepler : "peut-être de quoi relancer les dons?".

[spud19]

The Alien Hunter, le futur plus grand télescope au monde !

The Alien Hunter, ou E-ELT (European Extremely Large Telescope) est un nouveau télescope optique destiné à etre le plus grand jamais construit à ce jour. Le miroir téléscopique seul sera large de 42 mètres (près de la moitié de la longueur d'un terrain de rugby), et l'ensemble de la structure pèsera 2700 tonnes.

La construction de ce télescope qui se veut « révolutionnaire » débutera au début de l'année 2012, soit dans quelques mois, dans le désert d'Atacama au Chili, l'emplacement étant réputé pour son ciel dégagé. L'E-ELT devrait être opérationnel d'ici 2018.

La bête sera en outre capable de recueillir treize fois plus de lumière que n'importe quel autre télescope présentement existant, et sera en mesure de fournir des images seize fois plus nettes que Hubble.

De plus, ce télescope sera capable de voir des parties reculées de l'univers jusqu’ici jamais vu, et de fournir des images précises sur des planètes que nous n'avons même pas commencé à étudier !

source : http://www.eteignezvotreordinateur.com/the-alien-hunter-le-futur-plus-grand-telescope-au-monde/

<a href="http://www.123video.nl/123video_emb.swf?mediaSrc=1068221" target="_blank" class="new_win">http://www.123video.nl/123video_emb.swf?mediaSrc=1068221</a>

[Thib7]

Monstrueux ce télescope  vivement qu'il soit opérationnel !