Astronomers have encountered a surprisingly close mystery to Earth. guardian and Scientific American they learned that Breakthrough Listen astronomers using Australia’s Parkes telescope had discovered a strange radio signal from Proxima Centauri, the closest star system to the Sun. The signal occupies a strangely narrow band of 982 MHz that is not used by man-made spacecraft, but is not possible through known natural processes. The frequency also changes upwards, rather than downwards, as you would expect for a planet.
It didn’t count on that as a sign of aliens. Although Proxima Centauri is home to a potentially habitable planet, the signal has not been detected since its initial observation between April and May 2019. Breakthrough Listen said it was still “investigating carefully” and that unusual signals are usually interference, researchers could not ” “It is very unlikely that a radio-capable civilization could live virtually undetected next to it – the Earth would have been bathed in radio signals from a planet just 4.2 light-years away.” .