Computer simulations based on the prevailing cosmological model, ΛCDM, reproduce many observed properties of our Universe. But a study of coherent satellite motions in galaxy clusters yields discrepancies that challenge the definition of ‘today’.
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D. Nelson / IllustrisTNG Collaboration
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Brainerd, T. Dance of the galaxy pairs. Nat Astron 8, 408–409 (2024). https://doi.org/10.1038/s41550-024-02250-7
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DOI: https://doi.org/10.1038/s41550-024-02250-7
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