ESA’s Euclid telescope discovers its first comet during deep-field observations
The European Space Agency’s Euclid space telescope discovered comet C/2026 S1 (Euclid) in images taken from Sept. 16 to 24, 2026, while observing the Euclid Deep Field North. Designed to map billions of galaxies and probe dark matter and dark energy, the mission has now also identified a previously unknown solar-system object.