https://www.vice.com/en_us/article/5d99qz/saturns-moon-enceladus-is-habitable-confirms-breakthrough-study

Scientists have discovered high levels of phosphorus in the ocean spray of Saturn’s moon Enceladus, marking the first time that this essential ingredient for life has ever been detected in extraterrestrial seawater, reports a new study.

The breakthrough reveals that Enceladus is stocked with all right materials to support life as we know it, and hints that phosphorus may be present in other possible ocean worlds far from Earth, such as Neptune’s moon Triton or the dwarf planet Pluto. At this point, nobody knows if any of these places are actually inhabited by aliens, but the new results bolster the evidence that habitable conditions may be common in the solar system, and possibly beyond it.