Difference in Clock Readings May Detect Dark Matter (image) University of Nevada, Reno Share Print E-Mail Caption This two-clocks-illustration shows the pattern of how two atomic clocks would desynchronize and then resynchronize due to a lump of dark matter sweeping through a Global Positioning System or other atomic clock based network. Credit Photo courtesy of Andrei Derevianko, University of Nevada, Reno. Usage Restrictions None Share Print E-Mail 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.