Description：For decades, scientists have speculated that Europa may be the only place in the solar system with a large amount of liquid water besides Earth. Because photos of Europa's surface are similar to photos of ice on Earth's oceans, and the ice shell is covered with pits and craters left by various meteorite impacts, many scientists speculate that under Europa's ice shell there may be the largest liquid water ocean in the solar system, and there may be single-celled life under the ocean. This "life possibility" theory is the core of the movie "Europa Report".