JOKARUS Payload (image) Forschungsverbund Berlin Share Print E-Mail Caption Used to demonstrate the first optical frequency standard based on molecular iodine in space. Credit HU Berlin/Franz Gutsch Usage Restrictions The image may only be used with appropriate caption or credit. Share Print E-Mail 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.