ESA’s Euclid telescope discovers its first comet during deep-field observations
The European Space Agency’s Euclid space telescope detected comet C/2026 S1 (Euclid) in images taken between Sept. 16 and 24, 2026, while observing the Euclid Deep Field North. Designed to study dark matter and dark energy by surveying billions of galaxies, the mission made the discovery in a little-observed region of the solar system.