As it sped past Mars in March, Europa Clipper conducted a critical radar test that had been impossible to do on Earth. It went without a hitch, generating a detailed radargram of the Martian surface, which bodes well for exploring Jupiter's icy moon Europa. More: go.nasa.gov/4lXAtp7 This image was made using radar signals that bounced off Mars. What looks like a skyline is the outline of the topography. Features seen in the radargram include contributions from the topographic features both along