Technology Astronomers have detected 'strange signals' coming from a star 11 light-years away

15:46  16 july  2017
15:46  16 july  2017 Source:   Tech Insider

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  An excess of 'failed' stars is a bad sign for alien life Astronomers have discovered as many as 100 billion brown dwarfs in our galaxy, out of a maximum 400 billion stars in total. Brown dwarfs are too hot and big to be planets, but don't quite qualify as stars because they don't have enough mass to fuse hydrogen to helium in a "main sequence" reaction. It's thought that they glow and emit infrared light, plus a very small amount of visible light, thanks to less energetic fusion of deuterium (2H) or lithium, provided their mass is above a certain threshhold. Because they can't sustain a stable fusion reaction, they're referred to as "failed" stars.

Astronomers say they have detected " strange signals " coming from the direction of a small, dim star located about 11 light - years from Earth.

× Recommended For You Powered by Sailthru. Astronomers have detected ' strange signals ' coming from a star 11 light - years away .

<span style=Uploaded to Wikipedia by File Upload Bot (Magnus Manske)" src="/upload/images/real/2017/07/16/span-style-font-size-13px-uploaded-to-wikipedia-by-file-upload-bot-magnus-manske-span__911949_.jpg" />© Provided by Business Insider IncUploaded to Wikipedia by File Upload Bot (Magnus Manske) Astronomers say they've detected "strange signals" coming from the direction of a small, dim star located about 11 light-years from Earth.

Researchers picked up the mysterious signals on May 12 using the Arecibo Observatory, a huge radio telescope built inside of a Puerto Rican sinkhole.

The radio signals appear to be coming from Ross 128, a red dwarf star that's not yet known to have any planets and is about 2,800 times dimmer than the sun. Abel Méndez, an astrobiologist at the University of Puerto Rico at Arecibo, said the star was observed for 10 minutes, during which time the signal was picked up and "almost periodic".

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Mysterious signals coming from a dim star located 11 million light years away from Earth have been detected by astronomers . Scientists say that the " strange " radio signals came from a red dwarf star – Ross 128 (GJ 447) – which is around 2

Astronomers Have Detected Strange Signals Coming From a Star 11 Light Years Away !!!

Méndez said it's extremely unlikely that intelligent extraterrestrial life is responsible, but noted the possibility can't yet be ruled out.

"The SETI [Search for Extraterrestrial Intelligence] groups are aware of the signals," Méndez wrote in an email to Business Insider.

Explanations for the 'very peculiar' signals

While Arecibo is known for its role in efforts to search for signals from aliens, it's also great for looking at distant galaxies and pinging near-Earth asteroids.

Méndez thinks the signal is more likely from something humans put in space, perhaps a satellite that passed thousands of miles overhead.

"The field of view of [Arecibo] is wide enough, so there is the possibility that the signals were caused not by the star but another object in the line of sight," Méndez said, adding that "some communication satellites transmit in the frequencies we observed."

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An asteroid the size of the Gibraltar rock has beee the largest asteroid to come this close to Earth since 2004 On Wednesday afternoon the object passed close to. Astronomers Have Detected Strange Signals Coming From a Star 11 Light Years Away !!!

If it sounds too good to be true it probably is, goes the famous adage – and so it goes with extraordinary claims of potential alien signals . Still, astronomers are puzzling over an incredibly powerful burst of energy that seems to have emanated from the star HD 164595, located some 94 light - years away in

However, in a July 12 blog post about the mystery of Ross 128, he wrote that "we have never seen satellites emit bursts like that" and called the signals "very peculiar".

<span style=NASA's Goddard Space Flight Center/S. Wiessinger" src="/upload/images/real/2017/07/16/span-style-font-size-13px-nasa-s-goddard-space-flight-center-s-wiessinger-span__941079_.jpg" />© Provided by Business Insider IncNASA's Goddard Space Flight Center/S. Wiessinger

Another possible explanation is a stellar flare, or outburst of energy from the star's surface. Such bursts from the sun travel at light-speed, emit powerful radio signals, and can disrupt satellites and communications on Earth, as well as endanger astronauts.

Solar flares can also be chased by a slower-moving yet more energetic coronal mass ejections: a flood of solar particles that can distort our planet's magnetic field, generate geomagnetic storms, and cripple power grids and fry electronics.

Taking another look at Ross 128

To see if the signals are still there, Méndez said Arecibo is going to stare down Ross 128 and its surroundings many more times, starting July 16.

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× Astronomers have detected an 'interesting' and possibly alien radio signal coming from a sun-like star . Still, astronomers are puzzling over a powerful burst of energy that seems to have emanated from the star HD 164595, located some 94 light - years away in the constellation Hercules.

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"Success will be to find the signal again in the star but not in its surrounding[s]. If we don't get the signal again then the mystery deepens, " he said. "We are not sure if we can get to the bottom of this mystery from just the next observations if that was a rare event."

<span style=Liu Xu / Xinhua via AP" src="/upload/images/real/2017/07/16/span-style-font-size-13px-liu-xu-xinhua-via-ap-span__75323_.jpg" />© Provided by Business Insider IncLiu Xu / Xinhua via AP Méndez wrote in his blog post that other radio telescopes might not be powerful enough to pick up the signals, noting one exception: China's monstrous Five-hundred-meter Aperture Spherical radio Telescope, or FAST.

But FAST isn't operational right now, since it's being calibrated, and Méndez said he doesn't know when it will be back online.

Seth Shostak, a senior astronomer at the SETI Institute, confirmed that the group is "well aware of the signals" and might use its powerful Allen Telescope Array in California "to check them out."

"The chances are high that they're terrestrial interference, in fact. That's really always been the case," Shostak told Business Insider in an email.

Right now there's really only one compelling signal from outer space that might come from aliens: "[T]he WOW signal," Shostak said. "That one is still quite odd."

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In 1990, astronomers detected an asteroid, about one mile wide, trailing Mars. In the spirit of discovery, they named it Eureka.&nbsp;The origin of the Mars Trojans has puzzled asteroid researchers since. Mars is the only terrestrial planet in the solar system to have Trojans, which number in the thousands around Jupiter and about 17 around Neptune. One theory suggests the rocks came from material that was floating around near Mars when the planet was young and accumulating matter. Another says they arrived later in Mars’s life from elsewhere, and became trapped by the planet’s gravity.

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