Caption: 
The SwRI-led UVS instrument collects ultraviolet light to assess the composition of Europa’s atmospheric gases and surface materials. It detected oxygen, hydrogen and dust features in the interstellar comet 3I/ATLAS and made unique downstream observations of its tails. Europa-UVS Co-deputy principal investigator Dr. Tracy Becker (left) and Europa-UVS principal investigator Dr. Kurt Retherford (right) are pictured with Europa-UVS during clean cabin testing.