Caption: 
SwRI Lead Scientist Dr. Christopher Glein contributed to new findings that phosphorus in the form of orthophosphate (e.g., HPO4-2) is likely abundant in the subsurface ocean of Saturn’s moon Enceladus. A soda or alkaline ocean (containing NaHCO3 and/or Na2CO3) inside of Enceladus interacts geochemically with a rocky core. Modeling indicates that this interaction promotes the dissolution of phosphate minerals, making orthophosphate readily available to possible life in the ocean. Because phosphorus is an essential ingredient for life, this finding bolsters mounting evidence for habitability within this small Saturnian moon.