io001b.com
geologic map of Io
Credit: U.S. Geological Survey. Department of the Interior/USGS. Williams, D.A., Keszthelyi, L.P., Crown, D.A., Yff, J.A., Jaeger, W.L., Schenk, P.M., Geissler, P.E., and Becker, T.L., 2011, Geolog…