The Mission

Euclid will explore dark energy and dark matter, the essential but still mysterious ingredients in today’s “Standard Model’ of cosmology. In this model, the majority of matter in the universe is invisible (dark matter), and the universe is expanding at an increasing rate under the action of a still unknown energy source (dark energy).

Euclid will map the 3D distribution of up to two billion galaxies and dark matter associated with them, spread over most of the sky outside our Milky Way. Euclid is optimised to tackle some of the most important questions in modern cosmology: How did the Universe originate and why is it expanding at an accelerating rate, rather than slowing down due to the gravitational attraction of all the matter in it?

Euclid comprises a 1.2m diameter telescope and two scientific instruments: a visible-wavelength camera and a near-infrared camera/spectrometer.


OHB Sweden contributions

OHB Sweden has been appointed as supplier of both the chemical propulsion system as well as the fluidic part of the micro-propulsion system for the satellite by the European Space Agency (ESA) and Thales Alenia Space in Italy.



Euclid  is the second medium-class mission in ESA s Cosmic Vision programme.

Nearly 1000 scientists from 100 institutes form the Euclid Consortium building the instruments and participating in the scientific harvest of the mission. The Euclid Consortium comprises scientists from 13 European countries: Austria, Denmark, France, Finland, Germany, Italy, Netherlands, Norway, Spain, Switzerland, Portugal, Romania and the UK. It also includes a US NASA team of scientists.


Launch date

Euclid is scheduled for launch in 2020 from Europe’s Spaceport at Korou, French Guiana. The nominal mission lifetime will be 6 years.