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Artificial origin speculation

Speculation that 3I/ATLAS could be an artificial probe or payload, with some scientists arguing that its trajectory and timing are consistent with intentional astrodynamic choices.

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Jan 12, 2026
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What alternative natural origins have been proposed for 3i/atlas and how do they compare to loeb's hypothesis?

Three competing narratives have emerged to explain 3I/ATLAS’s oddities: an astrogeological origin as a lithified, stratified siliciclastic fragment from an exoplanetary sedimentary basin (the “sedimen...