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.
Since their discovery ten years ago, fast radio bursts have confounded astronomers. These intergalactic pulses of radio energy have defied explanation, but a new theory suggests a technological origin, whereby aliens use these beams to propel their ships through space. Extremely speculative stuff, to be sure, but it’s an idea worth pursuing given just how weird these pulses are.
There are lots of ways to search for technologically advanced aliens. We canlisten for them with radio telescopes. We can analyze the atmospheres of other plants to search for biosignatures, or look for their laser light shows.