An Icy Gaze into the Big Bang (2 of 2) (IMAGE) University of Innsbruck Caption The research group led by Rudolf Grimm reports on a first experimental step into the strongly interacting regime of an ultracold Fermi-Fermi mixture. Credit Harald Ritsch Usage Restrictions Only in coverage of this press release 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.