If it isn't aliens, it should be: Astronomers have discovered pulses of light coming at consistent time intervals from 234 out of 2.5 million stars scanned by the Sloan Digital Sky Survey.

Great. We're ready, man. We've talked it over as a species, sent probs and photoed and scanned and probed the skies because we'd love to finally KNOW that Earth isn't the only planet with life. If it is extraterrestrial intelligent life, even better. We're also sending out as much noise as we can to attract the attention of our fellow ETIs ... even if it means they'll come here and kill us all.

Anyway, evolution is an natural algorithm running here on Earth, and it's pretty clear that if life gets started anywhere, it'll end up running that biological program "survival of the fittest." Problem is ... we just haven't found any kind of life form off this world.

So, back to the desire for these pulses to be signals from aliens, either directed at us or at each other and we just got a glimpse of that conversation.

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Astronomers Ermanno Borra and E. Trottier from the Laval University in Canada suggest the number of stars, their location and the particularities of the signal pretty much rule out data corruption from some general background noise or some more general oddity among stars across the sky.

The two alien hunters also say they predicted this kind of light pulses that could be generated as laser signals from ETIs.

"... we consider the possibility, predicted in a previous published paper, that the signals are caused by light pulses generated by Extraterrestrial Intelligence to makes us aware of their existence. We find that the detected signals have exactly the shape of an ETI signal predicted in the previous publication and are therefore in agreement with this hypothesis," they stated in the abstract of their study that has been published on an open-source, non-peer-reviewed science website. The research has been accepted for publication in the journal Publications of the Astronomical Society of the Pacific.

Now, this is not proof of anything. Yet, a theory that predicted and makes sense of strange data is a theory heading toward significance.

"The fact that they are only found in a very small fraction of stars within a narrow spectral range centered near the spectral type of the sun is also in agreement with the ETI hypothesis," they wrote.

Everyone is supposed to hold their horses for more data and other researchers to check out the findings.

"... at this stage, this hypothesis needs to be confirmed with further work. Although unlikely, there is also a possibility that the signals are due to highly peculiar chemical compositions in a small fraction of galactic halo stars."

Consequently, we humans are still waiting for conclusive evidence that we are not alone. And, boy, do we hate waiting ... judging by the popularity and scope of science fiction books, movies and games.

 

Jake Ellison can be reached at 206-448-8334 or jakeellison@seattlepi.com. Follow Jake on Twitter at twitter.com/Jake_News. Also, swing by and *LIKE* his page on Facebook. If Google Plus is your thing, check out our science coverage here.