[ OK ] /notes :: research frame loaded [ OK ] scope ........................................ solar-system artifacts [ ON ] hypothesis open; no detection claimed.
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Artifact-SETI asks whether a durable extraterrestrial probe or artifact could be present in the Solar System, and whether public astronomical observations can place useful constraints on that possibility. It is a search hypothesis, not an explanation for unexplained data and not a claim that any artifact has been found.
The program looks for measurable departures from ordinary populations: unusual orbits, reflectance, thermal behavior, variability, morphology, or cross-survey counterparts. Every departure is tested first against natural dynamics, catalog limitations, contamination, selection effects, and processing artifacts.
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Bracewell established the possibility of autonomous probes waiting near a target star, detecting a technological society locally, and communicating on behalf of their makers. This turns part of SETI from a distant-signal problem into a possible local-observation problem.
Papagiannis argued that Solar-System small-body populations, especially the asteroid belt, deserve direct attention as possible locations for long-lived extraterrestrial technology. The proposal motivates systematic searches of places where artifacts could persist among natural objects.
Benford developed the “lurker” search concept for nearby co-orbital objects: stable or recurrent vantage points that can be inspected with optical and radar observations. The key move is operational—identify plausible sites and make them observable.
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A statistical outlier is not an artifact. A suggestive location is not evidence of occupancy. A null result is still useful when its sample, sensitivity, and exclusions are recorded. Artifact-SETI publishes the search path, counter-tests, and uncertainty so each inquiry can be audited independently of its outcome.
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Benford, J. (2019). “Looking for lurkers: Co-orbiters as SETI observables.” The Astronomical Journal, 158(4), 150. https://doi.org/10.3847/1538-3881/ab3e35
Bracewell, R. N. (1960). “Communications from superior galactic communities.” Nature, 186(4726), 670–671. https://doi.org/10.1038/186670a0
Papagiannis, M. D. (1978). “Are we all alone, or could they be in the asteroid belt?” Quarterly Journal of the Royal Astronomical Society, 19, 277–281.