Like pioneers, planetary scientists explore new worlds and push the boundaries of humankind’s reach in the universe. As planetary scientists, we lay eyes on landscapes never seen before, and use our observations to seek answers to some of the most fundamental and existential questions there are. Where do we come from? Where are we going? Are we alone in the universe?
In addition to its fundamental and exploratory aspirations, planetary science has concrete applications to pressing issues for humankind. Earth is a planet, and by looking at other planets, we can get a glimpse at Earth’s past and potential futures. Humans are affecting Earth in ways that may threaten its long-term habitability. Other planets can teach us how to adjust our interactions with the natural world towards sustainable habitability, and potentially provide a source of raw materials and energy through in situ resource utilization.
A new model shows how brine on Jupiter’s moon Europa can migrate within the icy shell to form pockets of salty water that erupt to the surface when freezing. The findings, which are important for the upcoming Europa Clipper mission, may explain cryovolcanic eruptions across icy bodies in the solar system.