NASA Theta 2560x600 (IMAGE) DOE/Argonne National Laboratory Caption The ALCF’s now-retired Theta supercomputer. Scientists use supercomputers to simulate experiments they can’t conduct in real life, such as creating new universes from scratch. Credit (Image by Argonne National Laboratory.) Usage Restrictions none 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.