I believe the surface temps vary from -170 at equator to -350 or so at the poles...perfect temp for unlimited chemical reactions (sarcasm alert)...atmosphere mostly oxygen...hmmmmm...oxidative destuction of surface molecules?...doesnt sound conducive to abiogenesis....just sayin...research sounds interesting tho....
Plus...Europa orbits within Jupiter’s radiation belts and is bombarded by fast-moving charged particles, which can turn amino acids and other possible biosignatures into mush.