Map of Io (IMAGE) Arizona State University Caption A team led by ASU's David Williams produces the first complete geologic map of Io. This image is a true color image of Io's antijovian hemisphere. Credit USGS/ASU Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.