Carl Carruthers, NanoRacks LLC (IMAGE) NASA/Johnson Space Center Caption This image shows Carl Carruthers, Jr., Ph.D., NanoRacks LLC. Credit Carl Carruthers, Jr., Ph.D. Usage Restrictions Carl Carruthers, Jr., Ph.D. 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.