RS2 (IMAGE) NASA/Johnson Space Center Caption A view of the removal of the RapidScat Nadir Adapter from the SpaceX-4 Dragon trunk and installation of the adapter onto the Columbus Exposed Facility Unit (EFU).The RapidScat instrument was the first piece of technology to be robotically assembled in space since the station's construction, as well as the first scatterometer to be able to cross-calibrate with other instruments in orbit. Credit NASA 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.