Clocks in space (IMAGE) University of Delaware Caption University of Delaware physicist Marianna Safronova and collaborators say atomic clocks and other quantum sensors could be used to detect dark matter. Credit Photo by Ariel Ramirez; illustration by Jeffrey C. Chase/ University of Delaware Usage Restrictions Must credit Ariel Ramirez and Jeffrey C. Chase/ University of Delaware License Original 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.