Euclid is an ESA mission to map dark matter and dark energy scheduled to launch in 2022.
Euclid will transmit data from its orbit around the Sun–Earth L2 Lagrangian point at a distance of 1.5 million kilometers using a K-band (26 GHz) radiofrequency data transmission system.
Euclid is a medium-class astronomy and astrophysics space mission that was selected in 2011 as part of ESA’s Cosmic Vision 2015–2025 scientific program.
Airbus Defence and Space is providing Euclid’s payload module, including the mission telescope.