In 2019, an Australian radio telescope detected a fascinating signal originating from near Proxima Centauri, the closest star system to Earth.
This signal, identified as Breakthrough Listen Candidate 1 (BLC1), exhibited characteristics resembling a “technosignature,” potentially indicating extraterrestrial intelligence.
Researchers were particularly intrigued as the signal featured a single identifiable wavelength (narrow band), demonstrated a Doppler shift (indicating movement), was localized in the sky, and persisted for several hours.
These traits strongly suggest that the signal is not merely a natural occurrence.
However, further analysis raises questions about the extraterrestrial theory. The BLC1 signal was also detected during other observations of Proxima Centauri and was recorded even when the telescope was not directed at the star.
A similar observation in the following year found no signal at all. By analyzing the complete dataset from the Breakthrough Listen Project, researchers identified similar signals from various other targets, including regions of empty sky. This points to the likelihood that the signal is merely radio interference.
BLC1 evokes memories of the infamous “Wow!” Signal, another narrowband radio signal detected in August 1977.
This notable potential “technosignature” lasted for 72 seconds and could not be easily attributed to natural phenomena.
Nonetheless, its precise location in the sky was never pinpointed, and follow-up searches failed to confirm its recurrence.
Opinions vary widely regarding the origins of the “Wow!” Signal, but clear evidence linking it to an alien civilization remains elusive.
Importantly, signals are not the only indicators of alien life that scientists are monitoring.
Discovered in 2017, ‘Oumuamua (as shown above) is a highly elongated, reddish rocky object traversing through our solar system.
Its unusual shape and orbit have led some astronomers to theorize that it could be a “solar sail” from an advanced alien civilization.
However, this theory remains unlikely since its peculiar properties can also be explained without resorting to alien involvement.
To date, scientists have not intercepted or identified anything definitively pointing to the presence of extraterrestrial life.
This article addresses the question posed by Daniel Howell of Leicester: “Have we ever intercepted anything from aliens?”
If you have further inquiries, please reach out to us at: [email protected] or drop us a message Facebook, Twitter, or Instagram Page (please include your name and location).
Explore our ultimate fun facts and discover more exciting science pages.
Read more:
Source: www.sciencefocus.com