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  • Meeting Report
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Tensions in Cosmology 2025

Nature Astronomy (2026)Cite this article

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The “Tensions in Cosmology 2025” conference brought together over 130 researchers in Corfu, Greece, to assess the status of the Hubble constant (H0), structure growth parameter (S8), and other emerging cosmological anomalies in the era of precision data from DESI, JWST, ACT, and other facilities. This Meeting Report summarizes the main discussions, the new results presented, and their implications for addressing the growing set of tensions with ΛCDM.

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Fig. 1: Recent determinations of the Hubble constant H0 from a variety of methods.

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Authors and Affiliations

  1. School of Mathematical and Physical Sciences, University of Sheffield, Sheffield, UK

    Eleonora Di Valentino

  2. Institute of Space Sciences and Astronomy, University of Malta, Msida, Malta

    Jackson Levi Said

  3. Department of Physics, University of Malta, Msida, Malta

    Jackson Levi Said

  4. National Observatory of Athens, Lofos Nymphon, Athens, Greece

    Emmanuel N. Saridakis

  5. CAS Key Laboratory for Researches in Galaxies and Cosmology, Department of Astronomy, University of Science and Technology of China, Hefei, Anhui, People’s Republic of China

    Emmanuel N. Saridakis

  6. Departamento de Matemáticas, Universidad Católica del Norte, Antofagasta, Chile

    Emmanuel N. Saridakis

Authors
  1. Eleonora Di Valentino
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  2. Jackson Levi Said
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  3. Emmanuel N. Saridakis
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Correspondence to Eleonora Di Valentino.

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The authors declare no competing interests.

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Di Valentino, E., Said, J.L. & Saridakis, E.N. Tensions in Cosmology 2025. Nat Astron (2026). https://doi.org/10.1038/s41550-026-02781-1

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