Loeb-Led Expedition Recovered About 700 Metallic Spherules from Suspected Interstellar Meteor IM1, Seeks Isotopic Confirmation and Larger Fragments

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Avi Loeb and collaborators from the Papua New Guinea University of Technology recovered about 700 metallic spherules along the interstellar meteor IM1’s trail and found isotope and alloy clues that could indicate an interstellar origin, with plans to recover larger fragments to confirm.

Harvard Astronomer Avi Loeb, Team Find Spherules of ‘Likely Extrasolar Composition’ | News | The Harvard Crimson
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Harvard Astronomer Avi Loeb, Team Find Spherules of ‘Likely Extrasolar Composition’ | News | The Harvard Crimson

Harvard Astronomy professor Abraham “Avi” Loeb and his research team have found metallic spherules of “likely extrasolar composition,” according to an Aug. 29 preprint posted to the online paper repository arXiv.