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ESA splits Euclid's first big data release: images in November 2026, cosmology products in mid-2027
ESA said Euclid's Data Release 1 will come in two stages. DR1-Foundation, due in November 2026, will release raw data, calibrated images, catalogues and spectra covering about 1,900 square degrees. The higher-level products for galaxy clustering and weak lensing, which drive the dark-energy results, follow in mid-2027 because they need more time to process and validate.
- DR1 had been expected in October 2026.
- ESA's timeline lists DR1-Foundation for 12 November 2026.
- Later releases: DR2 in June 2029 and DR3 in October 2031.