An intriguing candidate signal picked up last year by the Breakthrough Listen project using the Parkes telescope has been subjected to intensive analysis that suggests it is unlikely to originate from the Proxima Centauri system.

Instead, it appears to be an artifact of Earth-based interference from human technologies. Two research papers, published in Nature Astronomy, discuss both the detection of the candidate signal and an advanced data analysis process that can finely discern “false positives.”

More information.