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Comment on 'Discovery and Preliminary Characterization of a Third Interstellar Object: 3I/ATLAS'

Abraham Loeb, 2025. arXiv.

Mass-budget argument: an asteroidal ~10 km body would exceed the interstellar mass budget, so 3I is either a comet with core radius <0.6 km or a member of a rare population.

MYS0DFPTE25MVWR · mystery · click to copyM3I/ATLASPreprint0

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3I/ATLAS
The mystery article
MYS

Cite it

Loeb, A. (2025). Comment on 'Discovery and Preliminary Characterization of a Third Interstellar Object: 3I/ATLAS'. arXiv. https://arxiv.org/abs/2507.05881
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