Euclid (IMAGE) University College London Caption This is an artist's impression of Euclid. The European Space Agency today formally adopted the largest collaboration of astronomers in the world to help build the Euclid satellite, and UCL will be playing a major role. Credit ESA - C. Carreau Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.