Researchers with the Breakthrough Listen project have detected a curious signal originating from Proxima Centauri, the nearest star to the Sun. The signal has been designated as a possible alien transmission, but like so many examples in the past, this latest detection is probably another dead end.
What are those things?
For the past eight years, astronomers have been scratching their heads over a series of strange radio signals emanating from somewhere in the cosmos. And now, the mystery has deepened.