# CEA team combines AI with galaxy lensing data to refine cosmological constraints > A method involving French researchers was applied to shape measurements for about 100 million galaxies from the Dark Energy Survey. - Canonical URL: https://newsverum.com/en/news/france-cea-ai-weak-lensing-dark-energy-survey-cosmology-2026 - Publisher: Newsverum - Section: Technology - Country: France - Published: 2026-10-11T18:18:35+00:00 - Updated: 2026-10-11T18:18:35+00:00 - Source review period: 2026-10-11 - Other editions: [Türkçe](https://newsverum.com/tr/news/france-cea-ai-weak-lensing-dark-energy-survey-cosmology-2026.md), [العربية](https://newsverum.com/ar/news/france-cea-ai-weak-lensing-dark-energy-survey-cosmology-2026.md), [Français](https://newsverum.com/fr/news/france-cea-ai-weak-lensing-dark-energy-survey-cosmology-2026.md), [Español](https://newsverum.com/es/news/france-cea-ai-weak-lensing-dark-energy-survey-cosmology-2026.md), [Deutsch](https://newsverum.com/de/news/france-cea-ai-weak-lensing-dark-energy-survey-cosmology-2026.md), [Português](https://newsverum.com/pt/news/france-cea-ai-weak-lensing-dark-energy-survey-cosmology-2026.md) *The source does not state the event date; the period shown is the source review period.* France’s Alternative Energies and Atomic Energy Commission (CEA) described on October 9 a weak-lensing analysis that combines traditional cosmological statistics with artificial intelligence. Researchers at CEA-Irfu worked with teams at Imperial College and University College London. The method was applied to shape measurements for about 100 million galaxies in the Dark Energy Survey’s third-year data. CEA says it produced the most precise constraints yet based solely on weak-lensing data for matter density and cosmic clustering, and that the results are consistent with Planck measurements. This is the institution’s account of the research findings. ## Data ### AI and weak-lensing analysis CEA’s announcement described applying a method combining traditional cosmological statistics and AI to galaxy-shape data from DES Year 3. Methodology: The institution reports findings based on third-year Dark Energy Survey measurements for about 100 million galaxies and consistency with Planck. The “most precise” characterization is the source institution’s assessment. | date | label | description | status | |---|---|---|---| | 2026-10-09 | Research announcement dated October 9 | CEA said the method was applied to shape measurements for about 100 million galaxies and that constraints on matter density and clustering were consistent with Planck. | occurred | Sources: · Download data: [JSON](https://newsverum.com/api/v1/articles/france-cea-ai-weak-lensing-dark-energy-survey-cosmology-2026/data/official-release?lang=en&format=json) · [CSV](https://newsverum.com/api/v1/articles/france-cea-ai-weak-lensing-dark-energy-survey-cosmology-2026/data/official-release?lang=en&format=csv) ## Sources - [CEA Paris-Saclay]() (Source checked: 2026-10-11; Published: 2026-10-09) --- Cite the canonical URL above. [Editorial standards and corrections](https://newsverum.com/en/editorial)