If it sounds too good to be true it probably is, goes the famous adage - and so it goes with extraordinary claims of potential alien signals.
Still, astronomers are puzzling over an incredibly powerful burst of energy that seems to have emanated from the star HD 164595, located some 94 light-years away in the constellation Hercules.
"An international team of researchers has announced the detection of 'a strong signal in the direction of HD164595,'" book author Paul Gilster wrote at his blog Centauri Dreams, noting that a Russian radio telescope called RATAN-600 detected the signal last year.
"No one is claiming that this is the work of an extraterrestrial civilization ... But the signal is provocative enough that the RATAN-600 researchers are calling for permanent monitoring of this target," he wrote. The signal's discoverers are urging the Search for Extraterrestrial Intelligence (SETI) to take a long, hard look at HD 164595.
Seth Shostak, a senior astronomer at the SETI Institute, said that's exactly what the organization did Sunday night after it heard about the alleged signal, which was supposedly detected on May 15, 2015.