By most reasonable standards, Jupiter.s moon Europa would be considered airless, or very nearly so. There is, though, a tenuous atmosphere and exosphere of hydrogen and oxygen, which are the products of sublimation of the surface ice, and sputtering caused by energetic ions from the surrounding magnetosphere. The atmosphere supports an ionosphere which carries currents deflecting the flow of magnetospheric plasma and partially shielding the surface. The hydrogen, because of its low mass, escapes the moon, and forms an extended neutral cloud which is both a source of fresh ions for the magnetosphere, and, through charge exchange, a sink for sulfur and oxygen ions from the Io plasma torus. Thus the atmosphere, though thin, has significant impact on the plasma environment. These phenomena are fundamentally of interest as an example of the physical coupling of surfaces, atmospheres, and the space environment in the vicinity of bodies like Europa. Additionally, the electric currents carried by the plasma affect the magnetic signatures associated with the electrically conducting seawater beneath Europa.s surface. The magnetic signatures during several encounters did not yield clear evidence of an inductive response, and better understanding of the plasmas may lead to refinement of those analyses, and greater gain from a future mission to Europa. The Galileo spacecraft acquired observations of the thermal plasmas near Europa for a total of 7 different encounters between 1997 and 2000, and additionally provided a survey of Europa.s magnetospheric environment. Those observations and their evidence of the interaction region near the moon are discussed in this presentation.