Astronomers detect unusual 'radio signals' coming from dwarf star

Eloi Lecerf
Julho 17, 2017

Unusual signals emitted from a nearby star have been spotted by astronomers.

University of Puerto Rico astrobiologist Abel Mendez said that the star was observed for 10 minutes using the Arecibo Observatory - a massive radio telescope in a sink hole in Puerto Rico.

The red dwarf star - Ross 128 (GJ 447) - which is around 2,800 times dimmer than the Sun, is not yet known to have any planets, researchers said.

Mr Mendez said that the signal was "almost periodic", and although it is unlikely that it originates from alien beings, it can not be ruled out.

"In case you are wondering, the recurrent aliens hypothesis is at the bottom of many other better explanations", Mendez told "Business Insider".He also said that the source of the signals could be some kind of manmade object in space, such as a satellite. This finding has been revealed to SETI (Search for Extraterrestrial Intelligence) - an alien-hunting authority.

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But, Mr Mendez said in a recent blog post that "we have never seen satellites emit bursts like that" and described the signals as "very peculiar".

"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".

Professor Mendez says his team will observe the star again this month.

'We believe that the signals are not local radio frequency interferences (RFI) since they are unique to Ross 128 and observations of other stars immediately before and after did not show anything similar'.

Seth Shostak, senior astronomer at the SETI Institute, said that they are "well aware of the signals" and hope to use California's powerful Allen Telescope Array to "check them out".

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