BLC1: a near-perfect whisper from Proxima Centauri For a new generation of astronomers, the most electrifying “too perfect” signal was BLC1, a narrowband radio tone that appeared to come from Proxima ...

Radio waves from Earth have been moving through space for more than a century. They did not start as part of any grand plan to reach the stars. They began quietly, as a new way for humans to speak ...