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Color flashing stars could be evidence of ET

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Kristin Moore
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« on: October 31, 2016, 11:29:01 pm »

Color flashing stars could be evidence of ET
Posted on Monday, 31 October, 2016
Could anomalous color changes in distant stars be evidence of ET ? Image Credit: NASA/ESA
Two Canadian astronomers have found possible signs that an alien civilization is trying to communicate.
In a recent study, Ermanno F. Borra and Eric Trottier discovered that 234 stars out of the 2.5 million captured by the Sloan Digital Sky Survey appeared to exhibit signs of abnormal spectral modulation.

What the pair found most interesting about these tiny, rapid changes in color was the fact that they seemed to be occurring in a repeating pattern that was identical across several of the stars.

Their paper speculated that these anomalous color changes could have an intelligent source.

"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 wrote.

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

Not everyone however is convinced that the phenomenon has anything to do with aliens.

"The researchers claim to see the same tiny pattern appearing in hundreds of stars which is more likely to be the same mistake in their analysis, not a sign that all aliens are communicating the same way," said astrophysicist Dr Alan Duffy of Swinburne University.

"A detection of alien life would be so extraordinary that to claim it requires extraordinary evidence and several teams and telescopes confirming it."

"This work doesn't even come close to being able to make that claim."
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Kristin Moore
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« Reply #1 on: October 31, 2016, 11:30:47 pm »

Canadian astronomers say tiny flashes of colour from 234 stars is a sign of alien civilisation
October 26, 20163:57pm

The DI Cha star system shine through the centre of a ring of cascading dust in this image taken by the NASA/ESA Hubble Space Telescope. Picture: NASA
Jamie SeidelNews Corp Australia Network

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TWO French-Canadian astronomers have spotted strange flashes of colour from a set of stars. They say it’s an alien civilisation. Others say it’s just a glitch.

A study submitted to Publications of the Astronomical Society of the Pacific by the Universite Laval astronomers in Quebec states that a handful of stars captured by the Sloan Digital Sky Survey appear to be behaving abnormally.

Out of 2.5 million stars studied, 234 showed signs of ‘spectral modulation’ — or rapid, minuscule changes in colours.

It was exactly what the astronomers were looking for.

What excited them most was that these changes followed a repeating pattern, and that pattern was identical across many of the stars.

The study argues that this pattern is unlikely to be explained by natural forces. Could it be evidence of an alien civilisation attempting to alert the surrounding universe to its 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,” it reads.

“The fact that they are only found in a very small fraction of stars within a narrow spectral range centred near the spectral type of the sun is also in agreement with the ETI hypothesis.”
The above composite shows the extent of the Sloan Digital Sky Survey, which has 3D mapped about one third of the sky.

The above composite shows the extent of the Sloan Digital Sky Survey, which has 3D mapped about one third of the sky.Source:Supplied

ALIEN THEORY HAS SCEPTICS

Their excitement, however, has not been taken up by the rest of the astronomical community.

In fact, many express growing frustration at a spate of ‘alien contact’ reports being used to explain recent anomalous observations, including fast radio bursts and stuttering stars.

Mystery, they say, is the bread and butter of the astronomical business.

It’s about learning the incredibly complex rules that govern the universe.

Not everything that is odd has to be alien.

In fact, nothing odd has ever turned out to be such.

Yet.

And this study raises several ‘red flags’ pointing towards human error.

Swinburne University astrophysicist Dr Alan Duffy says he is not impressed by the study.

“The researchers claim to see the same tiny pattern appearing in hundreds of stars which is more likely to be the same mistake in their analysis, not a sign that all aliens are communicating the same way,” he says.

“A detection of alien life would be so extraordinary that to claim it requires extraordinary evidence and several teams and telescopes confirming it. This work doesn’t even come close to being able to make that claim.”

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QUALITY CONTROL

It is just one study. The findings have not been replicated.

Also, the signals that were the subject of the search have been detected by just the one survey — a wide field survey designed to map millions of stars, not analyse a few.

Specialist alien hunter for SETI (the Search for Extra Terrestrial Intelligence) Seth Shostak says he also is dubious about the conclusion.

“I am quite sceptical, in particular of the data processing that can take spectrally sampled data, and infer time variations. So I’d be a little careful,” he told astronomy.com.

    Breakthrough #Listen to check claim that features in @sdssurveys may be signals. Calibration effects more likely: https://t.co/dXTzkreyLs
    — Breakthrough (@brkthroughprize) October 11, 2016

SETI’s $100 million Breakthrough Listen survey for extraterrestrial life says the problem is most likely one of calibration.

“The one in 10,000 objects with unusual spectra seen by Borra and Trottier are certainly worthy of additional study. However, extraordinary claims require extraordinary evidence,” Breakthrough Listen director Andrew Siemion wrote in a statement.

“(It must be) confirmed by independent groups using their own telescopes, and for all natural explanations to be exhausted before invoking extraterrestrial agents as an explanation. Careful work must be undertaken to determine false positive rates, to rule out natural and instrumental explanations, and most importantly, to confirm detections using two or more independent telescopes.”


http://www.news.com.au/technology/science/space/canadian-astronomers-say-tiny-flashes-of-colour-from-234-stars-is-a-sign-of-alien-civilisation/news-story/178771811107dd116aafd8d8388b3a96
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Kristin Moore
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« Reply #2 on: October 31, 2016, 11:31:47 pm »




The DI Cha star system shine through the centre of a ring of cascading dust in this image taken by the NASA/ESA Hubble Space Telescope. Picture: NASA
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Kristin Moore
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« Reply #3 on: October 31, 2016, 11:32:34 pm »





The above composite shows the extent of the Sloan Digital Sky Survey, which has 3D mapped about one third of the sky.Source:Supplied
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Kristin Moore
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« Reply #4 on: October 31, 2016, 11:33:08 pm »

http://www.news.com.au/technology/science/space/canadian-astronomers-say-tiny-flashes-of-colour-from-234-stars-is-a-sign-of-alien-civilisation/news-story/178771811107dd116aafd8d8388b3a96
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