A “new” (previously unreleased) colour view of Europa’s surface from the old Galileo spacecraft; the image is a product of clear-filter grayscale data from one orbit, combined with lower-resolution colour data taken on a different orbit. The surface here is primarily almost pure water ice, with reddish bands of water ice containing hydrated salts. The image area measures approximately 163 km by 167 km (101 by 103 miles). What might be found in the subsurface ocean below? More information here.