Jakarta, CNBC Indonesia – An alleged broadcast from extraterrestrials or alien occurred on August 15, 1977. After 45 years had passed, researchers revealed the source of the broadcast.
Sound possibilities Wow! The signal comes from a sun-like star located 1,800 light-years away in the constellation Sagittarius.
“Wow! Signal is considered a SETI candidate radio signal [search for extraterrestrial intelligence/pencarian kecerdasan luar angkasa] best we caught with our telescopes,” said amateur astronomer Alberto Caballero, quoted from Live Science, Friday (20/5/2022).
For information, NASA explains SETI is a field that has been listening to possible messages from otherworldly beings since the mid-20th century.
The SETI on Ohio State University’s Big Ear telescope sounds powerful, but short at only 1 minute 12 seconds, says the report by its discoverer Jerry Ehman. The researchers had repeatedly searched from the same place but the results were empty.
But Caballero said the voice wasn’t from alien. Rather it comes from an event in nature. Astronomers have ruled out some possibilities such as comets.
Caballero searched through the star catalog of the European Space Agency’s Gaia satellite after two receivers of the Big Ear telescope pointed to the constellation Sagittarius. “I found in particular one sun-like star,” he said.
He found the object 2MASS 19281982-2640123 1,800 light years away. The star has a temperature, diameter, luminosity identical to that of the Sun in the Solar System.
Caballero’s search focuses on Sun-like stars as it searches for known life. Referring to the results, he said it could be the best idea to look for a habitable planet or even a civilization.
The idea was approved by a historian and SETI study at the Harvard-Smithsonia Center for Astrophysics, Rebecca Charbonneau. He, who did not participate in the research, said the instrument was aimed at things he found interesting.
“There are billions of stars in the galaxy and we have to figure out how to narrow it down,” he said. But he also questioned whether the search for stars like the Sun was too restrictive and only looked at a group of stars.
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