Jets of water ice from surface fractures near the south pole of Saturn's icy moon Enceladus produce a plume of gas and particles. The source of the jets may be a liquid water region under the ice shell. Here, ammonia is reported to be present in the plume, providing strong evidence for the existence of at least some liquid water.
- J. H. Waite Jr
- W. S. Lewis
- W.-H. Ip
