expose-the-light:Jupiter and Two of Its Moons A “fire and ice” pair of Jupiter’s
expose-the-light: Jupiter and Two of Its Moons A “fire and ice” pair of Jupiter’s large moons — volcanic Io (lower left) and ice-sheathed Europa, which possesses a global ocean (upper right) — orbit across the face of the giant planet. Credit: NASA; JPL; Paul Geissler; Michael Benson -- source link