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arXiv:2110.15213physics.pop-ph

On the Possibility of an Artificial Origin for `Oumuamua

Abraham Loeb

Early discovery. Linked by one identifiable commenter. This paper is outside the main ranking; a mention is not an endorsement.

Abstract

The first large interstellar object discovered near Earth, `Oumuamua, showed half a dozen anomalies relative to comets or asteroids in the Solar system. All natural-origin interpretations of the Oumuamua anomalies contemplated objects of a type never-seen-before, such as: a porous cloud of dust particles, a tidal disruption fragment or exotic icebergs made of pure hydrogen or pure nitrogen. Each of these natural-origin models has major quantitative shortcomings, and so the possibility of an artificial origin for `Oumuamua must be considered. The Galileo Project aims to collect new data that will identify the nature of `Oumuamua-like objects in the coming years.

arXiv comments
17 pages, 8 figures, accepted for publication as a review paper in the journal Astrobiology
Journal reference
DOI
doi:10.1089/ast.2021.0193
Subjects
physics.pop-phPopular Physics astro-ph.EPEarth and Planetary Astrophysics astro-ph.IMInstrumentation and Methods for Astrophysics physics.soc-phPhysics and Society

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