"BIG NEWS" SETI Picks Up Regular Laser Pulse From Space

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PostSat May 16, 2009 4:57 pm » by Bink02


Great post slush... :flop:


anyone remember this one?

Wow! signal
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The Wow! signal

The Wow! signal was a strong, narrowband radio signal detected by Dr. Jerry R. Ehman on August 15, 1977, while working on a SETI project at the Big Ear radio telescope of Ohio State University. The signal bore expected hallmarks of potential non-terrestrial and non-solar system origin. It lasted for 72 seconds, the full duration Big Ear observed it, but has not been detected again. It has been the focus of attention in the mainstream media when talking about SETI results.

Amazed at how closely the signal matched the expected signature of an interstellar signal in the antenna used, Ehman circled the signal on the computer printout and wrote the comment "Wow!" on its side. This comment became the name of the signal.
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* 1 Technical details
* 2 Searches for recurrence of the signal
* 3 Speculations on the origin
* 4 Location of the signal
* 5 See also
* 6 References
* 7 External links

[edit] Technical details

The circled letter code 6EQUJ5 describes the intensity variation of the signal. A space denotes an intensity between 0 and 0.999.., the numbers 1-9 denote the correspondingly numbered intensities (from 1.000 to 9.999...), and intensities of 10.0 and above are denoted by a letter ('A' corresponds to intensities between 10.0 and 10.999..., 'B' to 11.0 to 11.999..., etc). The value 'U' (an intensity between 30.0 and 30.999...) was the highest ever detected by the telescope. The intensity in this case is the unitless signal-to-noise ratio, where noise was averaged for that band over the previous few minutes.[1]

The bandwidth of the signal is less than 10 kHz (each column on the printout corresponds to a 10 kHz-wide channel; the signal is only present in one column). Two different values for its frequency have been given: 1420.356 MHz (J. D. Kraus) and 1420.456 MHz (J. R. Ehman), both within 50 kHz of the frequency of the hydrogen line, which is at 1420.406 MHz. Two possible equatorial coordinates are given:

* R.A. = 19h22m22s ± 5s
* R.A. = 19h25m12s ± 5s

Both coordinates give dec. = -27°03´ ± 20´ (epoch B1950.0).[2]

The Big Ear telescope was fixed and used the rotation of the Earth to scan the sky. At the speed of the earth's rotation, and given the width of the Big Ear's observation "window", the Big Ear could observe any given point for just 72 seconds. An extraterrestrial signal, therefore, would be expected to register for exactly 72 seconds, and the recorded intensity of that signal would show a gradual peaking for the first 36 seconds – until the signal reached the center of Big Ear's observation "window" – at which time it would show a gradual decrease.

Therefore, both the length of the Wow! signal, 72 seconds, and its shape would correspond to a possible extraterrestrial origin.[3]

[edit] Searches for recurrence of the signal

The Big Ear telescope used two feed horns to search for signals, each pointing to a slightly different direction in the sky following Earth's rotation; the Wow! signal was detected in one of the horns but not in the other, although the data were processed in such a way that it is impossible to determine in which of the two horns the signal entered. In any case, the signal was expected to appear a mere three minutes apart in each of the horns, but this did not happen.[3] Ehman unsuccessfully looked for recurrences of the signal using Big Ear in the month after the detection.[4]

In 1987 and 1989, Robert Gray searched for the event using the META array at Oak Ridge Observatory, but did not re-detect it.[4]

In 1995 and 1996, Gray also searched for the signal using the Very Large Array, which is significantly more powerful than Big Ear.[4]

Gray and Dr. Simon Ellingsen later searched for recurrences of the event in 1999 using the University of Tasmania's Hobart 26m radio telescope.[5] Six 14-hour observations were made at positions in the vicinity, but did not detect anything similar to the Wow signal.[3]

[edit] Speculations on the origin

Interstellar scintillation of a weaker continuous signal — similar, in effect, to atmospheric twinkling—could be a possible explanation, although this still would not exclude the possibility of the signal being artificial in its nature. However, even by using the significantly more sensitive Very Large Array, such a signal could not be detected, and the probability that a signal below the Very Large Array level could be detected by the Big Ear radio telescope due to interstellar scintillation is low.[4] Other speculations include a rotating lighthouse-like source, a signal sweeping in frequency, or a one time burst. Some have also suggested it could have come from a moving space vehicle of extraterrestrial origin.

Ehman has stated his doubts that the signal is of intelligent extraterrestrial origin: "We should have seen it again when we looked for it 50 times. Something suggests it was an Earth-sourced signal that simply got reflected off a piece of space debris."[6]

He later recanted his skepticism somewhat after further research scientifically relegated an Earth-bound signal to be astronomically unlikely, due to the requirements of a space-borne reflector being bound to certain unrealistic requirements to sufficiently explain the nature of the signal. Also, the 1420 MHz signal is problematic in itself in that it is "protected spectrum" or bandwidth in which terrestrial transmitters are forbidden to transmit.[7][8] In his most recent writings, Ehman resists "drawing vast conclusions from half-vast data."

[edit] Location of the signal

The location of the signal in celestial coordinates was, at (epoch J2000.0)

Right Ascension (On the positive horn): 19h25m31s ± 10s

Right Ascension (On the negative horn): 19h28m22s ± 10s

Declination (Is the same for both horns): -26d57m ± 20m

This region of the sky lies in the constellation Sagittarius, roughly 2.5 degrees south of the fifth-magnitude star Chi-1 Sagittarii.

I feel we're getting close , this is very cool , with how fast our technology is advancing , the discovery of rocky type planets , ( my ball park guess is within the next ten years ) and it really doesn't matter if we can carry on a conversation or not , just knowing that "someone" else is out there , would just be mindblowing .... :D
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PostSat May 16, 2009 5:46 pm » by TheDuck


Soon, very soon, i think by 2011 :flop: :alien:
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PostSat May 16, 2009 6:35 pm » by Bink02


slushpup wrote:The Wow! signal was a strong, narrowband radio signal detected by Dr. Jerry R. Ehman on August 15, 1977, while working on a SETI project at the Big Ear radio telescope of Ohio State University. The signal bore expected hallmarks of potential non-terrestrial and non-solar system origin. It lasted for 72 seconds, the full duration Big Ear observed it, but has not been detected again. It has been the focus of attention in the mainstream media when talking about SETI results.

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Seti and the wow signal


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:flop: very cool! this is the first time I've heard about that second signal...even better !





The SETI Mystery Signal


SETI : Suddenly There Is A Signal of Unknown Origin

2004


A SETI mystery. All of sudden we have a signal from 1000 light years away. What is sending it ? Astonomers are trying to rule out earth-based anomalies - however the mystery is that the signal is not currently explainable. You can read more here and here. The mission of the SETI Institute is to explore, understand and explain the origin, nature and prevalence of life in the universe.


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PostSat May 16, 2009 6:40 pm » by Eaganthorn


slushpup wrote:The Wow! signal was a strong, narrowband radio signal detected by Dr. Jerry R. Ehman on August 15, 1977, while working on a SETI project at the Big Ear radio telescope of Ohio State University. The signal bore expected hallmarks of potential non-terrestrial and non-solar system origin. It lasted for 72 seconds, the full duration Big Ear observed it, but has not been detected again. It has been the focus of attention in the mainstream media when talking about SETI results.

Yes, good times, good times!
The idea of this laser contact is exciting if real and I’ll withhold my exuberance until confirmation. There are several things on the horizon, all with great potential and all potentially interactive.

The faster than light theories are starting to add up and some of the testing parameters for the LHC are in place to help define that which was previously thought to be impossible.

The theory that objects can move faster than the speed of light but while in that speed of motion the cohesive relationship between particle and wave is ripped causing the object to go “dark”, not as in the light is off, but dark as in unable to see, light may not illuminate it at all. The reason for this new theory came about from a ten year study of several galaxies. When looking for one thing, you may find something else.

An astronomer was searching for a massive black hole in a distant galaxy and through various theories he found a way to identify one through means of a type of x-ray spectrograph. His discovery along with the works of another astronomer observing the density patterns of the hearts of several galaxies that by a comparative accident that our galaxy had a black hole in the center, further research has discovered a black hole in the center of EVERY spiral galaxy, which has now been confirmed.

The border of these black holes can only be defined by observing the inner most stars of each galaxy rapidly orbiting the black hole. The closer to the center, the faster they orbit, those closest to the black hole but not yet in it are estimated to be travelling at .999999% of light speed.

Every have to clean a round swimming pool, this used to be my sons chore, he found a fast and fun way to do it. He would jump in and start running (if you can call it that) around the inside edge of the pool, get all the water spinning and then get out. The water would slow down and leave all the debris in the very center of the pool. He would break out the vacuum and clean the junk in less than two minutes. Smart kid right?, Good genes, taught him everything he knows. Anyway, the very center of the pool was always the last to slow down and even though the rest of the water appeared to be still, there would be these dead leaves spinning very fast. And that is what the black holes are, theoretically, they are the dead leaves in the galactic swimming pool spinning faster than the speed of light.

If this theory pans out when the LHC goes on line, and it is still a big if, science may then potentially have a set of numbers to crunch into some form of light speed travel, therefore we could visit those who are currently beaming us given all things considered to be accurate thus far.

What messages are they beaming to us, could be secrets to the universe, could be an apple pie recipe, we’ll have to wait and see. Then again, it could be they are actually talking to some one behind or in front of us.

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PostSat May 16, 2009 7:21 pm » by Drextin


excellent post eagan!

It is also theorized that blackholes could be used to boost certain types of signals. It's the same process that allows for anything made up of solid matter to use the gravity of planets/moons to achieve faster speeds and better positioning.

The bigger a black hole the more likely you are to be able to escape that forbidden zone called the event horizon. Galactic center blackholes do not spin as fast around the edges or pack the gravitational pull that the smaller ones do. So if you could bend light around a black hole you could essentially amp light to travel across the universe without breaking up and scattering the information contained in it.

Astronomers use the technique now to see objects that normally would have been out of reach for great detail. It's called aptly enough the lensing effect. The light from any object that comes into contact with a large gravity source like a blackhole will be magnified tremendously. So an object billions of light years away could be viewed as though it was only a few thousand light years from earth.

Unfortunately this technique doesn't work so well with smaller blackholes where light has little chance of escaping. So what we can view is limited to the size of the blackhole and the perfect position of deep space objects to take advantage of this effect.

If an alien race used blackholes for this we might never find the laser signal again since once the light is redirected by a blackhole we lose all trace of where it actually originated from.
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PostSun May 17, 2009 4:05 pm » by Grey


AFTER you've spent more than 20 years hunting for an alien signal, you think you'd be celebrating if you noticed a mysterious pulse suddenly rising up on your computer readouts. A regular pulse, amid the random clatter of the cosmos, suggests that someone very smart at the other end is sending a message.

But when Ragbir Bhathal, an astrophysicist at the University of Western Sydney, who teaches the only university-based course on SETI (search for extraterrestrial intelligence) in Australia, detected the suspicious signal on a clear night last December, he knew better than to crack open the special bottle of champagne he has tucked away for the history-making occasion.

Instead, he's spent the past few months meticulously investigating whether the unrecognised signature was caused by a glitch in his instrumentation, a rogue astrophysical phenomenon, or some unknown random noise.

Even if he picks up the signal again - he's been scouring the same co-ordinates of the night sky on an almost daily basis since - the scientific rule book dictates he'll need to get it peer-reviewed before he can take his announcement to the world. "And that is a lot of ifs," he concedes.

The hunt for extraterrestrial life has been boosted recently by the discovery last month of a rocky world not unlike our own, about 20 light years away, which its Swiss discoverers have dubbed Gliese 581e, the latest in a long line of planet discoveries during the past decade (350 and counting).

Although Gliese 581e is too close to its host sun to support life, it's the first planet believed to be rocky like our own, a kind of super-hot Earth quite unlike the long line of gas and ice giants discovered to date.

With the launch of NASA's Kepler space telescope in March, specifically designed to detect smaller Earth-like planets, astronomers are confident that the discovery of a blue planet, orbiting in the so-called Goldilocks zone, where liquid water can support life, is edging closer by the day. But it will still be up to ground-based telescopes to confirm the mass of the planet, as space-based telescopes such as the Kepler can only yield its approximate diameter.

The quest of SETI astronomers, however, is not just for the discovery of an Earth-like planet but for life intelligent enough to transmit meaningful signals across vast stretches of space. For more than 40 years, they have been doggedly searching for alien transmissions via radio telescope, tracking tens of millions of radio signals across different sections of the night sky, but so far the results have been, by any scientific standard, dismal.

There has been a handful of false alarms - the detection of short, intense bursts of electromagnetic energy that might be transmitted by an advanced civilisation - but these have been later shown to be caused by other cosmic phenomena, such as quasars.

The belief that an alien civilisation might also be listening to our television and radio signals has also been dashed by the recent discovery that the signals don't, as once thought, reach into deep space: they eventually become so weak that they disappear in the roar of the electromagnetic noise.

That is partly why the OZ OSETI (o for optical) project and a handful of its US counterparts have turned to laser pulse technology in what is the most ambitious effort yet to detect a signal from an alien species. "For an advanced civilisation, radio wave technology would be old hat," Bhathal says. "My strong feeling is that if there are (extraterrestrial intelligence) civilisations out there, they will send the signal by laser pulses or laser flashes."

In 2000, science fiction writer Arthur C. Clarke, a former patron of the Australian SETI project, advised Bhathal to "let the better spectrum, light" drive his search for ET. Bhathal's OZ OSETI project is the only dedicated project for searching for ET in the optical spectrum in the southern hemisphere.

"NASA is already using lasers for space communication and it's not unrealistic to imagine that an extraterrestrial intelligence might be using them as well," Bhathal says.

"In terms of Earth technology today, we have achieved a maximum of 1015 watts of laser power for a brief period, butan advanced civilisation could have lasers with powers of 1025." He admits, however, that our failure to pick up any interstellar signals so far could mean that advanced civilisations are using a communications technique still not discovered on Earth.

"It is risky to judge everything by our own technology," he says.

The search field of the OZ OSETI project is 100 light years from Earth: a short walk around the block in galactic terms, but an area large enough to contain at least 1000 stars and possibly 20 times as many planets.

While the discovery of worlds outside our solar system has given weight to the idea that the universe may be teeming with life - albeit sprinkled across an incomprehensibly wide area - it's the key cosmic numbers that have astronomers in disagreement.

For example, how often do the magic ingredients for life - a rocky planet, located at just the right distance from its sun at justthe right moment in the sun's life - come together?

If the answer is very often, there ought to be lots of planets like our own, and life may be more the rule than a miraculous accident. In 1960, Frank Drake, now a professor of astronomy at the University of Southern California, estimated that there could be up to a million technological civilisations in the Milky Way galaxy alone. But Bhathal believes "we are nowhere near being able to put a sensible figure on how common life may be".

What we do know is that our sun is a perfectly ordinary star in a rotating island of 100 billion stars, the Milky Way galaxy, which in turn is just one of 100 billion or so galaxies in the observable universe. The laws of mathematics weigh heavily in favour of the idea that we are not alone. Moreover, the discovery of more than 300 planets suggests that solar systems such as ours may not be all that unusual. It's very likely that smaller and rockier worlds are more common than the gas giants, which are easier to find because of the greater wriggle they exert in a star's path.

"The low-mass planets are much harder to find because they have a smaller Doppler amplitude," says Chris Tinney of the department of astrophysics at the University of NSW. "It might also mean we are not looking in the right way. But we're now certain that low-mass planets are more common. The Kepler space telescope will no doubt help usfind them."

Tinney explains that while the basic techniques for detecting planets have been around for some time, what's revolutionised the field has been the dramatic technological improvements in spectrographs and telescopic power.

"Planet searching has now become a sexy field and private donors in the US are putting money into it," Tinney says.

Other satellite projects such as the Allen telescope array, named after Paul Allen, the Microsoft co-founder who donated $US13million towards its creation, are also coming online. The array uses an incredible 350 satellite dishes to scan the sky for the faintwhisper of radio signals from celestial objects such as quasars.

There's also the hardware already in space if ET happens to be passing through our neighbourhood. The Pioneer 10 spacecraft, launched in 1972, included an aluminium plate with human figures, a drawing of the planets and an outline of the spacecraft's course. The last, extremely weak signal from this surprisingly robust spacecraft was received in 2006. If it's still around, Pioneer 10 would now be hurtling somewhere in the interstellar void outside our solar system.

With the discovery of more planets, the relatively new science of exobiology, dedicated to the study of extraterrestrial life, has gained the gleam of scientific respectability.

But the field is still trying to overcome the UFO stigma, laments Ain de Horta, a project scientist with the Australian SETI Institute.

"There are still those in the scientific community who look down their noses at us, but that's increasingly unusual these days. There's a growing recognition that this is important science, with the potential to answer one of the most fundamental questions facing humanity. Those who lump us in with the UFO nuts tend not to be scientists," says de Horta.

"We're counting on the physics being the same elsewhere in the universe."

De Horta's institute is, in collaboration with CSIRO's Parkes telescope, scouring radio waves in its search for ET.

"If an alien civilisation has developed technology it's likely to be based on most ofthe same principles as our own. Like us, forexample, they would have discovered radio waves."

Even so, de Horta concedes, life elsewhere in the universe might resemble nothing we know on Earth. It could be moulded by different chemistries, different gravity and different climatic environments.

In any case, it's highly unlikely we'll ever have a face-to-face meeting, as space travel even at Star Trek's warp drive wouldn't get us there in less than thousands of years. A two-way conversation would take decades. And even for that to happen, says de Horta, we would need intelligent life to be reaching its technological prime at the same time as ours and transmitting radio waves at a wavelength that we can detect.

"The whole argument about communication hinges on the longevity of a species and their use of a technology that is recognisable to us," he says.

What all the planet hunters and SETI have in common is a white-hot passion for discovering alien worlds. Bhathal knows that the odds of finding anything are long and the area he is scanning, as big as it is, may still not be extensive enough to yield anything, but he's determined to keep his eyes on the sky.

"There (have) to be other Earth-like worlds. Otherwise what do we have? A whole lot of wasted space."


http://www.theaustralian.news.com.au/st ... 17,00.html

That's pretty exciting. I'd be really interested in any further findings. If it were intelligent you would assume that he could find it again. Either way, it's definitley interesting.

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PostSun May 17, 2009 9:01 pm » by Eaganthorn


slushpup wrote:
eaganthorn wrote:What messages are they beaming to us, could be secrets to the universe, could be an apple pie recipe, we’ll have to wait and see. Then again, it could be they are actually talking to some one behind or in front of us.

Eagan


That never crossed my mind in the excitement of the moment. That most very well could be a fact. That would raise more questions.
Who are they chatting with?

The Watchers? There are those who believe the alien abduction stories, that aliens routinely abduct a person, perform a physical examination, record the data and return the human unharmed with little to no memory of the event, just some confusion about some missing time. Following this train of thought, it would be unlikely these alien scientists would not communicate with their home world, provide an update on status, send in a report, receive new mission parameters, etc.

Just something to think about, but it’s probably nothing to really worry about, unless we translate the message to say, “Looks like there is about 7 billion of them, send the big transport and more hot sauce”.
Last edited by Eaganthorn on Mon May 18, 2009 10:12 am, edited 1 time in total.
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PostMon May 18, 2009 6:15 am » by Darkstar99


I thank all of you who put up these websites! I want to know the truth just as much as you do.







BUT.........I find that i cant find the truth here......sorry.........I cant find the truth.......i find pieces
and fragments but not the whole story..........................when will we find the truth..............??




I have faith in all of you..........Please show me and my family the truth about ufossssss,,,,,,,,,,,,,,,and all the rest...........


PLEASE :sunny:

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PostMon May 18, 2009 6:21 am » by Darkstar99


not trying to find a messiah....................GOT ONE>>>>>>>>>>>>>just trying to find a truth head.....love all peace$$$$$$$$$$$$4 :ohno:

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PostMon May 18, 2009 9:26 pm » by Robsonsdad


slushpup wrote:THE SIGNAL


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If they sent that signal from a star system 500 light years away, don't you think the will have forgotten they sent it by now.


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