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SETI finds no alien signals from interstellar comet 3I/ATLAS (opens in new tab)

The SETI Institute said Wednesday that radio observations of interstellar comet 3I/ATLAS found no evidence of extraterrestrial technology, with results published in The Astronomical Journal. Scientists discovered the object in the summer of 2025 and identified it as a comet that entered the solar system from another star. 3I/ATLAS is the third known interstellar object detected in the solar system, and scientists have deemed all three known examples natural in origin. SETI used the Allen Tele...

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