Radio signals coming from a small star at about 11 light-years from Earth were detected

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The wave patterns don’t really match anything the astronomers would expect from the star, leaving them stumped as to the signal’s origins. The signals consisted of broadband quasi-periodic non-polarized pulses with very strong dispersion-like features. There’s no foolproof explanation for the source. It’s possible the signal is caused by solar flares from Ross 128, which is a very active star that flares frequently.

Arecibo-observatory
The Arecibo Observatory

Radio signals from flares are usually at much lower frequencies than the ones detected by Arecibo telescope. “There are three main possible explanations: they could be (1) emissions from Ross 128 similar to Type II solar flares, (2) emissions from another object in the field of view of Ross 128, or just (3) burst from a high orbit satellite since low orbit satellites are quick to move out of the field of view,” the researchers said. But each of the possible explanations has their own problems. “We have a mistery here,” the scientists believe. “Fortunately, we obtained more time to observe Ross 128 next Sunday, July 16, and we might clarify soon the nature of its radio emissions, but there are no guarantees.”

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