RasLabs Synthetic Muscle (IMAGE) NASA/Johnson Space Center Caption The third generation of the RasLabs Synthetic Muscle enhanced with carbon fibers, shown to be just more than 2 centimeters in length. Credit Ras Labs Usage Restrictions For news coverage in connection with this news story. 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.