CROCS Data Release I: Constraints on the Hubble Constant
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| Main Authors: | , , , , , , , |
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| Format: | Preprint |
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2026
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| _version_ | 1866917375274647552 |
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| author | Weisenbach, Luke Newman, Sophie L. Graham, Kieran Dhavala, Sai S. Floyd, Benjamin Shah, Neel Flash, Gemini 3 Collaboration, The CROCS |
| author_facet | Weisenbach, Luke Newman, Sophie L. Graham, Kieran Dhavala, Sai S. Floyd, Benjamin Shah, Neel Flash, Gemini 3 Collaboration, The CROCS |
| contents | Recent cosmological surveys and datasets have highlighted a variety of tensions to the concordance model of our universe, $Λ$CDM. Of particular interest is the Hubble tension, the $5.5σ$ discrepancy between measurements of the Hubble constant $H_0$ using high redshift CMB data from Planck ($67.27\pm0.60$km$\text{s}^{-1}\text{Mpc}^{-1}$) and low redshift supernovae from SH0ES ($73.2\pm1.3$km$\text{s}^{-1}\text{Mpc}^{-1}$). To avoid stepping on any toes, we have initiated the CROCS collaboration to resolve this tension, gathering experts from across many fields of cosmology, astrophysics, astronomy, machine learning, data science, philosophy, and astrology. In this paper, we present findings from CROCS Data Release 1, corresponding to the first $\sim3$ days and 27 minutes (rest frame) of observation. We perform a robust statistical analysis, showing that Planck and SH0ES both suffer from imperial biasing systematics (IBS) at $5σ$ significance. Accounting for these errors by converting to metric units reconciles the high and low redshift data, with $H_0 = 69.00\pm0.420$km$\text{s}^{-1}\text{Mpc}^{-1}$. We thus report that our results are sufficient to end the Hubble tension for good. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2603_29879 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | CROCS Data Release I: Constraints on the Hubble Constant Weisenbach, Luke Newman, Sophie L. Graham, Kieran Dhavala, Sai S. Floyd, Benjamin Shah, Neel Flash, Gemini 3 Collaboration, The CROCS Cosmology and Nongalactic Astrophysics Astrophysics of Galaxies Recent cosmological surveys and datasets have highlighted a variety of tensions to the concordance model of our universe, $Λ$CDM. Of particular interest is the Hubble tension, the $5.5σ$ discrepancy between measurements of the Hubble constant $H_0$ using high redshift CMB data from Planck ($67.27\pm0.60$km$\text{s}^{-1}\text{Mpc}^{-1}$) and low redshift supernovae from SH0ES ($73.2\pm1.3$km$\text{s}^{-1}\text{Mpc}^{-1}$). To avoid stepping on any toes, we have initiated the CROCS collaboration to resolve this tension, gathering experts from across many fields of cosmology, astrophysics, astronomy, machine learning, data science, philosophy, and astrology. In this paper, we present findings from CROCS Data Release 1, corresponding to the first $\sim3$ days and 27 minutes (rest frame) of observation. We perform a robust statistical analysis, showing that Planck and SH0ES both suffer from imperial biasing systematics (IBS) at $5σ$ significance. Accounting for these errors by converting to metric units reconciles the high and low redshift data, with $H_0 = 69.00\pm0.420$km$\text{s}^{-1}\text{Mpc}^{-1}$. We thus report that our results are sufficient to end the Hubble tension for good. |
| title | CROCS Data Release I: Constraints on the Hubble Constant |
| topic | Cosmology and Nongalactic Astrophysics Astrophysics of Galaxies |
| url | https://arxiv.org/abs/2603.29879 |