Io Images from Keck, Gemini Telescopes (IMAGE) University of California - Berkeley Caption Images of Io at different near-infrared wavelengths. The name of the filter used is indicated in the black box at the start of each section. The bright spots are thermal emissions from Io's myriad volcanoes. Note the increasing number of hot spots detected at longer wavelengths, i.e. towards the bottom of the figure. Credit Katherine de Kleer and Imke de Pater, UC Berkeley 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.