Water vapour jets inside the plume of gas leaving Enceladus

A plume of water vapour escapes from fissures crossing the south polar region of Saturn's moon, Enceladus. This study reports observations of an occultation of a star by the plume on 24 October 2007, which revealed four high-density gas jets at positions that coincide with those of the previously seen dust jets. The amount of water seen does not agree with earlier predictions.