Scientists Detect Signals from Interstellar Comet 3I/ATLAS, No Evidence of Extraterrestrial Life

Researchers have conducted detailed observations of the interstellar comet 3I/ATLAS using the Green Bank Telescope, aiming to detect unusual signals that might suggest the presence of intelligent extraterrestrial technologies. However, the findings did not provide conclusive evidence.

According to a report on Science Alert, the Breakthrough Listen project team employed one of the world's most sensitive radio telescopes, with a diameter of 100 meters, to listen to the comet for several hours as it approaches its closest point to Earth on December 19, 2025.

The scientists focused on searching for so-called "technological signatures" across a broad frequency spectrum. Although several signals were recorded during the observation period, subsequent analysis revealed that these signals did not originate from the comet itself but were likely due to human interference.

Discovered on July 1, 2025, comet 3I/ATLAS has garnered significant scientific interest due to its interstellar origin. Its closest approach to Earth is approximately 270 million kilometers, allowing for detailed observations with advanced instruments.

During the observation process, the team implemented a precise observational schedule, alternating the telescope's focus between the comet and other areas of the sky to filter out unrelated signals. Following data analysis, nine potential signals were identified; however, further investigation confirmed that they were of terrestrial origin.

Nonetheless, the scientists stated that the lack of evidence does not negate the possibility of extraterrestrial technology but merely indicates that the comet shows no signs of being an artificial object or a means of intelligent communication.

In this context, NASA officials noted that the comet behaves physically like a natural comet, with all available evidence supporting this description, while acknowledging that its interstellar origin adds to its scientific significance.

Researchers involved in the study emphasized that such investigations, even if they do not lead to extraordinary discoveries, contribute to the development of observational instruments and enhance scientists' understanding of cosmic phenomena. They highlighted that "not finding anything" can also be a valuable scientific outcome.