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Sunday, September 4, 2016

Mysterious signals emanating from space

A surge radio signals coming from a Sun-like star has attracted the attention of astronomers. The signal is thought to have come from a star called HD 164595 in the constellation of Hercules, which is about 95 light years from the Earth.

Scientists estimate the signal is the result of natural phenomena such as microlensing, in which the star's gravity becomes stronger and focusing the signals elsewhere.
The signals seem to be coming from a sun-like star known as HD 164595 in the constellation Hercules, around 95 light years away. Pictured is an artist's impression of an alien star system. (Picture from: http://adf.ly/1da2SW)
However, astronomers have also been asked for SETI (Search for Extraterrestrial Intelligence) for a closer look at whether the radio signals were a message from extraterrestrial beings.

As quoted by the Daily Mail on Tuesday, August 30, 2016, SETI track the HD 164595 using the Allen Telescope Array in northern California and Boquete Optical SETI Observatory, in Panama.
Scientists suggest the spike (pictured) may be the result of a natural phenomenon, such as 'microlensing', in which the star's gravity strengthens and focus signals from farther away. (Picture from: http://adf.ly/1da2SW)
According to the explanation by Paul Gilster in Centauri Dreams, the signal was first detected on May 15, 2015 by the RATAN-600 radio telescope in Zelenchukskaya, Russia.

HD 164595 attract the attention of scientists because it is like the sun, at least has one Neptune-sized warm planet known orbiting. But they said it was likely there are other planets that have not been detected. The average temperature of HD 164595 is 12 Kelvin hotter and aged 100 million years younger than the Sun.

"No one is claiming that's an act of the extraterrestrial civilization, but it deserves to be studied further," said Gilster.

"The researchers said that, if it comes from an isotropic flare, is likely only come from Type II Kardashev civilization."
A spike in radio signals coming from the direction of a sun-like star, HD 164595, is being followed up by alien-hunting telescopes. SETI is using the Allen Telescope Array (pictured) in northern California and the Boquete Optical SETI Observatory in Panama to confirm the data. (Picture from: http://adf.ly/1da2SW)
"(But) if it is a narrow signal that focuses on our solar system, the possibility of a power available to Type I Kardashev civilization," he added.

Kardashev scale is a way to measure the technological sophistication of an alien civilization is based on the energy used. According to the makers of the scale, Nikolai Kardashev, there are three types of the alien civilizations.

Type I civilization consists of species that are able to utilize all the available energy of the nearest star, collect, and store it to meet the needs of its population. And Type II civilization much more advanced and can utilize all their star power. While the civilization of type III, a species that has been able to control everything related to energy.

Paul Gilster of the Tau Zero Foundation, which conducts research interstellar say, if the signal was artificial, then it could be derived from a more advanced civilization than human - or is in Kardashev scale entry into the Type II.

Currently, humans are around Type I - where civilization is able to utilize all the available energy, including solar, wind, earthquakes, and other fuels. Meanwhile, Type II has been able to utilize the whole of the energy emitted by the star, which powers billions of watts.

In a statement, Seth Shostak, the SETI Institute's senior astronomer claimed to have no clue where the civilization that seeks to give the 'messages' to us. "It is difficult to understand why someone would want to target our solar system with a strong signal," he said further, as quoted by CNN.

"It's a little confusing, because Russia has found this signals a year ago, but do not let other people know," said a senior astronomer at the SETI Institute.

"The signal may be genuine, but I suspect that it is not extraterrestrial beings. There is another possibility that such a broad signal caused by the natural disruption (or even terrestrial interference)."

Researchers who found the signal at the Special Astrophysical Observatory, Russian Academy of Science said that required further observations to HD 164595. The discovery of the signal will be discussed at the International Astronautical Congress held in Mexico in September 2016. *** [EKA | FROM VARIOUS SOURCES | DAILY MAIL]
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