Euclid’s Wide and Deep Surveys (DR1-Foundation)

ensci_euclid20261112a November 12th, 2026

Credit: ESA/Euclid/Euclid Consortium/NASA; ESA/Gaia/DPAC; ESA/Planck Collaboration, CC BY-SA 3.0 IGO

On 12 November 2026, ESA’s Euclid space telescope released its first major batch of data. This release, named DR1-Foundation, includes data gathered as part of the Euclid Wide and Deep Surveys, and forms the foundation of many forthcoming scientific studies of the Universe. The area of sky covered by each is shown here: the Euclid Wide Survey in light yellow, and Euclid Deep Survey in darker yellow.

These observations were gathered over roughly one year, from spring 2024 to spring 2025. In that time the Euclid Wide Survey covered around 1900 deg2 of sky, as shown here. While very large, this represents just 14% of the mission’s target for the entire six-year survey.

This all-sky view is an overlay of ESA Gaia’s star map from its second data release in 2018 and ESA Planck’s dust map from 2014.

Provider: Euclid

Image Source: https://euclid.caltech.edu/image/euclid20261112a-euclid-s-wide-and-deep-surveys-dr1-foundation

Image Use Policy: CC BY-SA 3.0 IGO or ESA Standard Licence