THOR (IMAGE) Michigan Medicine - University of Michigan Caption This is a conceptual image of Thor's hammer. Credit Ella Maru Studio, Inc. and Yashar Niknafs Usage Restrictions for use in stories about this research 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.