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7/17/2017 by mdc
Mike Wall reported that on May 12, the 1,000-foot-wide (305 meters) Arecibo radio telescope in Puerto Rico detected some very peculiar signals apparently emanating from Ross 128, a red dwarf star that lies just 11 light-years from Earth.

The signals consisted of broadband quasi-periodic non-polarized pulses with very strong dispersion-like features, Abel Mendez, director of the Planetary Habitability Laboratory at the University of Puerto Rico, wrote in a statement late last week.

They 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, he added.

The three leading explanations for the signals, Mendez wrote, are solar flare-like emissions from Ross 128, emissions from some other object in the same field of view and a burst of some sort from a satellite orbiting high above Earth. But each of these hypotheses has its issues, he said.

Also see the SETI Infographic ... All About the Search for Extraterrestrial Intelligence.


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