EUROPA UVS (IMAGE) Southwest Research Institute Caption SwRI’s Europa Clipper Ultraviolet Spectrograph (UVS) instrument will collect ultraviolet light to study the composition of the atmospheric gases and surface materials of Europa, one of Jupiter’s largest moons with a suspected subsurface ocean. Europa-UVS is the sixth in a series of SwRI-built ultraviolet spectrographs including two others surveying the Jupiter system. Credit Southwest Research Institute Usage Restrictions Images/Videos may be used by the public for educational and informational purposes only. License Original 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.