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SETI Institute Looks for Signs of Technology in Interstellar Visitor 3I/ATLAS
June 3, 2026, Mountain View, CA — Scientists at the SETI Institute searched for technological signals from 3I/ATLAS, the third interstellar object observed in our Solar System. Using the Allen Telescope Array (ATA) at the Hat Creek Radio Observatory in Northern California, the team scanned a wide range of radio frequencies for signs of extraterrestrial technology and found none, as expected based on other astronomical observations showing that the object exhibits natural comet-like composition and behavior.
A Rare Interstellar Visitor
Discovered in July 2025, 3I/ATLAS is the third confirmed object from another star system to enter our Solar System, after 1I/'Oumuamua and 2I/Borisov. Its interstellar origin makes 3I/ATLAS a rare opportunity to study material from another stellar system and better understand how planetary systems form and evolve. While observations strongly indicate that 3I/ATLAS is a natural object, interstellar visitors are also compelling technosignature targets because an artificial object—however unlikely—could represent detectable extraterrestrial technology and potentially provide the first evidence of life beyond Earth.
