David Thilker, Johns Hopkins University (IMAGE) Johns Hopkins University Caption David Thilker of the Johns Hopkins University is leader of the team of astronomers that spotted the unexpected new dwarf galaxies. Credit Will Kirk/JHU 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.