A mysterious signal looked like a sign of alien technology—but it turned out to be radio interference

Sorry folks: 'Alien' signal from Proxima Centauri was likely just a broken computer on Earth

Mysterious 'alien beacon' was false alarm - Radio signal seemed to originate from the star Proxima Centauri, and provided a helpful drill for future searches

A Mysterious 'Alien Beacon' Was Actually a False Alarm