Euclid is an ESA medium class space mission selected for launch in 2020 in the Cosmic Vision 2015-2025 programme. The Euclid mission aims at understanding why the expansion of the Universe is accelerating and what is the very nature of the source of this acceleration that physicists refer to as dark energy.
The satellite will be launched by a Soyuz ST-2.1B rocket and transferred to the L2 Lagrange point for a 6 years mission. Euclid will observe 15,000 deg2 of the darkest sky that is free of contamination by light emissions from our Galaxy and our Solar System.
The project work is/was carried out under a programme of and funded by the European Space Agency (ESA). The view expressed herein can in no way be taken to reflect the official opinion of the European Space Agency.