Image: Jupiter&Io

Description: An image of Jupiter and its moon Io. It was taken by the New Horizons spacecraft's flyby in early 2007. The image of Jupiter is an infrared color composite and the image Io is a nearly true-color composite. According to NASA's website, "The infrared wavelengths used highlight variations in the altitude of the Jovian cloud tops, with blue denoting high-altitude clouds and hazes, and red indicating deeper clouds. [...] The image shows a major eruption in progress on Io's night side, at the northern volcano Tvashtar. Incandescent lava glows red beneath a high volcanic plume, whose uppermost portions are illuminated by sunlight. The plume appears blue due to scattering of light by small particles in the plume." [1]
Usage Terms: Public domain