Artist's Rendering of Quantum 'Clocks' (IMAGE) Center for Astrophysics | Harvard & Smithsonian Caption New research suggests that oscillating heavy particles generated "clocks" in the primordial universe that could be used to determine what produced the initial conditions that gave rise to the universe. Credit Yi Wang and Xingang Chen 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.