Enceladus is a tiny moon of Saturn and one of the major targets for the search of extraterrestrial life. Enceladus is almost totally composed by ice and there are giant geysers in its south pole. The water vapor from the geysers go so high that it formed a ring around Saturn. It shows that there is liquid water on its interior and on Earth where there is water, there is life.
Photo of Enceladus taken by the Cassini probe. Source: NASA
Geysers on Enceladus. Source: Wikimedia
Comparison between Enceladus and the United Kingdom. Source: Wikimedia