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+--- Thread: Article A lack of alien signals actually tells us a lot (/thread-14067.html)
A lack of alien signals actually tells us a lot - C C - May 8, 2023
https://www.universetoday.com/161238/a-lack-of-alien-signals-actually-tells-us-a-lot/
EXCERPTS: In a recent study published in The Astronomical Journal, a researcher from the École Polytechnique Fédérale de Lausanne (EPFL) discusses the potential reasons why we haven’t received technoemission, also called technosignatures, from an extraterrestrial intelligence during the 60 years that SETI has been searching, along with recommending additional methods as to how we can continue to search for such emissions.
Dr. Claudio Grimaldi, who is a guest scientist at the Laboratory of Statistical Biophysics at EPFL and sole author of the study, suggests that Earth has not received a technoemission simply because Earth could be in what he refers to as a “void space”, meaning the area of space that Earth resides in has been devoid of technoemissions.
If it is true that we’ve been in a void region for sixty years, our model suggests that there are less than one to five electromagnetic emissions per century anywhere in our galaxy. This would make them about as rare as supernovas in the Milky Way,” said Dr. Grimaldi.
[...] The study concludes by emphasizing the ideas presented could be either true or false but suggested that hunting for technoemissions should go beyond SETI searches while focusing on more “commensal investigations, i.e., searching for technosignals from data collected by telescopes performing other observational activities, rather than investing telescope time in active SETI searches.” (MORE - missing details)