Radiation (IMAGE) University of California - Berkeley Caption At infrared wavelengths (5 microns), the Keck II telescope detects thermal radiation from the deep atmosphere. In this mosaic of the area around Jupiter's red ovals, all three spots appear dark because clouds obscure heat emanating from lower elevations. Bright regions have reduced cloud cover, showing leakage of heat into space. Credit Imke de Pater, Michael Wong (UC Berkeley), and Al Conrad (Keck Observatory). 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.