Massive Galaxy Cluster Abell 2744 (Foreground) (image) NASA/Goddard Space Flight Center Caption This long-exposure Hubble Space Telescope image of massive galaxy cluster Abell 2744 (foreground) is the deepest ever made of any cluster of galaxies. It shows some of the faintest and youngest galaxies ever detected in space. Credit NASA/ESA/J.Lotz, M.Mountain, A.Koekemoer/STScI HFF Team Usage Restrictions None 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.