3I/ATLAS: No Technosignatures Detected in a Comet-like Interstellar Visitor with a ~1 km Nucleus

To the point

3I/ATLAS is an interstellar comet that behaved like a typical Solar System comet, with searches for technosignatures turning up no credible alien signals and size estimates placing its nucleus around a kilometer in diameter, a result that fits natural explanations discussed by Avi Loeb and others.

Breakthrough Listen Searched Interstellar Object 3I/ATLAS For Technosignatures During Its Closest Approach To Earth
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Breakthrough Listen Searched Interstellar Object 3I/ATLAS For Technosignatures During Its Closest Approach To Earth

The team found nine events that they investigated further. Meanwhile, another team looked at the non-gravitational acceleration of the comet, finally pinning down a better estimate of its size.