How the ATA filtered 70 million signals to search for alien technology on comet 3I/ATLAS.
Sandeep K S
Jan 9
1 min read
Infographic illustrating the process of searching for alien signals from 3I/ATLAS. The observation covered 7.25 hours across multiple sessions using the Allen Telescope Array, monitoring frequencies between 1-12 GHz. Over 70 million signals were initially detected, but were filtered down through steps such as eliminating human-made interference and assessing the object's movement. This narrowed down potential signals to 211 candidates, all of which were confirmed as Earth-based radio interference. Despite sensitivity high enough to detect a 10-watt transmitter, no alien technosignatures were found, with findings verified by worldwide observatories.
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