Jupiter's Moon Io Is The Most Volcanically Active Body In The Solar System, With Hundreds Of Active Volcanoes That Can Shoot Sulphur Plumes More Than 500 Kilometres Above Its Surface — A Landscape So

When Voyager 1 flew past Jupiter in March 1979, scientists expected its moon Io to be cold, battered and geologically quiet. Instead, the spacecraft photographed a world with no obvious impact craters, a surface stained yellow, orange, red and black, ...Read more