Spectroscopic mapping of Io's surface with HST/STIS: SO${}_2$ frost, sulfur allotropes, and large-scale compositional patterns

Samantha K. Trumbo, M. Ryleigh Davis, Benjamin Cassese +1

Io's intense volcanic activity results in one of the most colorful surfaces in the solar system. Ultraviolet and visible-wavelength observations of Io are critical to uncovering th…