Astronomy (IMAGE) Lancaster University Caption Dr Jorryt Matthee (left) with Dr David Sobral (fourth from left) and most of Sobral's XGAL research group, including João Calhau (third from the left) and Sérgio Santos (right) inside Lisbon's Observatory dome. Credit Lancaster University 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.