Plumes of water vapor that may be venting into space from Jupiter’s moon Europa could come from within the icy crust itself, according to new research. A model outlines a process for brine, or salt-enriched water, moving around within the moon’s shell and eventually forming pockets of water—even more concentrated with salt—that could erupt.
Source:
https://phys.org/news/2020-11-potential-plumes-europa-crust.html