Do you see the two volcanoes on Io's turbulent surface? Check out this NASA Image of the Day for an analysis of the picture.
- Io's volcanoes are caused by tidal forces from Jupiter. Learn more about the volcanoes at Io's Alien Volcanoes. - Io's volcanoes have caused some trouble for passing spacecraft. Find out why at Beware: Io Dust. - Other moons in the solar system may have volcanoes as well. Read about possible cryovolcanoes on Titan here.