An illustration in multiple shades of blue depicting Euclid. The spacecraft has a cylindrical body with an open top and a flat, square base as well as a flat panel along its back.
December 20, 2022
Historical DateDecember 20, 2022
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An illustration of ESA's Euclid spacecraft. The colors depicted in this illustration are for artistic purposes only.

Euclid will investigate some of the biggest mysteries in the cosmos. Using two instruments, a Near-Infrared Spectrometer and Photometer with NASA-supplied infrared detectors and a visible-light camera, Euclid will work to understand dark matter and dark energy by measuring the expansion of the universe and the distribution of dark matter over cosmic time.

Launched: July 1, 2023