3I/ATLAS: The Third Interstellar Visitor and the Quest to Detect Signs of Extraterrestrial Technology

To the point

3I/ATLAS is a fast interstellar object headed toward the Sun, possibly the third such visitor and up to about 20 km across, with Avi Loeb and colleagues suggesting it could be alien technology because of its unusual path, but proof would require signs beyond natural origin such as a radio signal or propulsion, and only a deliberate maneuver or an Earth‑approaching trajectory in a stable orbit would strongly imply intent, while it may simply be a fast icy visitor that still helps us improve how we search for such objects.