Space telescope to shed light on the dark universe

A replica of Euclid in a laboratory in Cannes. Euclid, a space mission led by the European Space Agency that includes a massive optical camera designed and built by UCL researchers, will map the large-scale structures of the universe to better understand two mysterious components: dark matter and dark energy. Everything that we can see and detect in the world around us - the stars, galaxies, flowers, our bodies, atoms - represents just 5% of the universe. The rest of it, according to current theories, is made up of two components: dark matter and dark energy. Their existence is inferred indirectly. Dark matter keeps galaxies together; dark energy is hastening the expansion of the universe. But what they are is unknown.