Flux Tube Network (IMAGE) Vanderbilt University Caption This is a computer graphic showing the kind of tight network of flux tubes that the physicists propose may have filled the early universe. Credit Thomas Kephart, Vanderbilt University 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.