Io: The Prometheus Plume Credit: Galileo Project, JPL, NASA Two sulfurous eruptions r visible on Jupiter's volcanic moon Io in this color composite image from the robotic Galileo spacecraft that orbited Jupiter from 1995 to 2003. @ the image top, over Io's limb, a bluish plume rises about 140 kilometers above the surface of a volcanic caldera known as Pillan Patera. In the image middle, near the night/day shadow line, the ring shaped Prometheus plume is seen rising about 75 kilometers above
Jupiter and Io. "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."
Saturn's Iapetus: Painted Moon- Vast sections of this strange world are dark as coal, while others are as bright as ice. The composition of the dark material is unknown, but infrared spectra indicate that it possibly contains some dark form of carbon. A leading hypothesis is that the dark material is mostly dirt leftover when relatively warm but dirty ice sublimates.
Jupiter and Its Moons Photograph courtesy NASA This family portrait, a composite of the Jovian system, includes the edge of Jupiter (with the Great Red Spot visible) and Jupiter's four largest moons, known as the Galilean satellites. From top to bottom are Io, Europa, Ganymede, and Callisto. The smallest of these four moons, Europa is about the size of Earth's moon.
New Horizons Soldiers On
New Volcano Eruption on Jupiter's Io - 10,000 Times Iceland's 2010 Event : The tidal push-and-pull of massive Jupiter heats up the interior of its moon, Io, making it the most volcanically active known body in our Solar System. Captured August 29, 2013, this image reveals the magnitude of one of the brightest volcanoes ever seen on our Solar System. Io became alive with volcanism in the middle of 2013