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In 1977, Earth received an alien 'wow' signal. The source will shock you!

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The mysterious "wow" alien signal picked up by the Big Ear radio telescope on the night of August 15, 1977 has been traced back to a single source.

A radio telescope picked up an unusual signal that lasted only 1 minute and 12 seconds nearly half a century ago, at 11:16 p.m. on August 15, 1977. The radio signal was received by the Big Ear radio telescope, and it is still the most likely contender for an extraterrestrial origin 45 years later.

When astronomer Jerry Ehman saw the printout of the unique signal, he circled it and penned 'wow,' giving it the mysterious name.

Researchers have now traced the source of the "wow" signal to a sun-like star almost 1800 light-years away in the constellation Sagittarius. The Search for Extraterrestrial Intelligence (SETI) continues to investigate the signal.

According to the study published in the International Journal of Astrobiology, a total of 66 G and K-type stars were sampled in order to determine the source of the alien signal, but only one of them was identified as a potential Sun-like star based on the information available.

2MASS 19281982-2640123 has been chosen as the best target for conducting observations in the search for techno-signatures of the signal by astronomer Alberto Caballero, who directed the project.

The signal lasted 72 seconds, but the search for the source took 45 years because it never repeated and no matching signal was ever identified. "If we look at the history of (the few) radio signals sent to various locations in the hopes of contacting a civilization, we can see that none of them had a long duration or were sent repeatedly for a long time. A culture from another world could have chosen to act similarly "Caballero was quoted in the newspaper.

In the region where the unique signal could have emerged, the astronomer discovered a total of 550 stars with temperatures ranging from 4,450 to 6,000 K. G-type stars were chosen because the Sun is a G-type star with a temperature of 5,778 Kelvin, and the only sort of life we've discovered orbits this type of star. K-type stars were chosen because they are thought to be capable of hosting super-habitable planets.

The sun-like star 2MASS 19281982-2640123, which is too dim to image with current technology, an extragalactic source, or any other source might be the source of the wow signal, according to the astronomer.

The huge Arecibo telescope in Puerto Rico had also sent a radio message with information about the basic chemicals of life, the structure of DNA, Earth's position in our solar system, and a stick figure of a human. However, no response has yet been received.

A new proposal is being developed to send another signal into deep space containing fresh information such as simple communication principles, basic mathematical concepts, physics formulas, DNA constituents, and information about humanity, the Earth, and a return address in case someone wants to respond.

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