SETI Institute Reports on Technosignature Search for Interstellar Object 3I/ATLAS
The SETI Institute Releases Technosignature Report on 3I/ATLAS
Universe Today
Image: Universe Today
The SETI Institute conducted a technosignature search on the interstellar object 3I/ATLAS, which was detected on July 1, 2025. Despite scanning for over seven hours, no artificial signals were found, but the study established important upper limits for future searches.
- 013I/ATLAS is the third interstellar object detected in eight years, following 1I/'Oumuamua and 2I/Borisov.
- 02The SETI team scanned the object for over seven hours across a frequency range of 1 to 9 GHz.
- 03A total of 74 million signals were initially identified, but only 211 were deemed worthy of further inspection.
- 04The study placed upper limits on any potential radio signals from 3I/ATLAS, ruling out signals stronger than about 10-110 watts.
- 05The rapid response of the Allen Telescope Array allowed observations to begin less than a day after the object's detection.
Advertisement
In-Article Ad
On July 1, 2025, the Asteroid Terrestrial-impact Last Alert System (ATLAS) detected the interstellar object (ISO) 3I/ATLAS, marking it as the third ISO observed in eight years. Following the precedent set by 1I/'Oumuamua and 2I/Borisov, scientists at the SETI Institute conducted a technosignature search to determine if the object exhibited signs of extraterrestrial technology. Using the Allen Telescope Array at the Hat Creek Radio Observatory, researchers scanned 3I/ATLAS for over seven hours across radio frequencies from 1 to 9 gigahertz (GHz). They initially identified 74 million narrowband signals, filtering them down to 211 signals of interest, none of which were found to be artificial. The study established upper limits on potential signals, ruling out any stronger than approximately 10-110 watts. The findings, published in The Astronomical Journal, highlight the importance of ongoing searches for technosignatures from ISOs, as they provide insights into planetary system formation and the natural properties of objects ejected from star systems.
Advertisement
In-Article Ad
Advertisement
In-Article Ad
Reader Poll
Do you believe we will find evidence of extraterrestrial life in the future?
Connecting to poll...
More about SETI Institute
Read the original article
Visit the source for the complete story.





