If alien life exists on Europa, we may find it in hydrothermal vents
![If alien life exists on Europa, we may find it in hydrothermal vents](https://cdn.mos.cms.futurecdn.net/wEkX9JhAKJxyA62aVRGZGj.jpg)
Cool to moderately warm hydrothermal vents circulating water through the seabed could sustain habitable conditions on moons such as Jupiter's Europa and Saturn's Enceladus for billions of years.