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Recently a manuscript by Loeb et al. was uploaded to arXiv (preprint2308.15623) that asserted that the CNEOS bolide 2014-01-08 was interstellar;that spherules recovered from the seafloor near the airburst were associatedwith this bolide; that they had Fe isotopic ratios indicating origin asmicrometeorites; that they had unusual chemical compositions enriched in Be, Laand U, never seen before in micrometeorite spherules; that these compositionswere formed in the magma ocean stage of a differentiated extrasolar planet; andthat the Be abundance reflected passage through the interstellar medium.Despite not being peer-reviewed, this uploaded manuscript has been reported bymedia outlets as "published", and its conclusions have been widely distributedas fact. The purpose of this manuscript is to provide potential peer reviewersand the general public with an appreciation of the multiple fatal flaws withthe manuscript's arguments. We discuss the published evidence that the2014-01-08 bolide is not interstellar. We show that there is no statisticalspatial correlation of a chemical signature or even number of recoveredspherules with the 2014-01-08 bolide. We demonstrate that the Fe isotopicratios decisively indicate an origin in our Solar System, with > 99.995%probability. We demonstrate that the unusual enrichments in La, U, etc., havein fact been observed in micrometeorites before and attributed to terrestrialcontamination; and that the Be abundances are similarly consistent with thoseof ferromanganese nodules, after reacting with sea water. Far from being exoticparticles from an extrasolar planet, the spherules collected and analyzed byLoeb et al. appear to be just like those found around the world, with a SolarSystem origin and compositions modified by tens of thousands of years residenceat the ocean bottom.

Critique of arXiv submission 2308.15623, "Discovery of Spherules of  Likely Extrasolar Composition in the Pacific Ocean Site of the CNEOS  2014-01-08 (IM1) Bolide", by A. Loeb et al