Phoebe probably distant traveller Cassini's images of Phoebe Images of Saturn's moon Phoebe from the Cassini spacecraft suggest it may be a relic of objects that formed billions of years ago in the outer Solar System. The pictures seem to show ice in its craters, boosting the theory that it is more similar to comets and very distant Solar System objects than to asteroids. Scientists think Phoebe migrated inwards and was probably captured by Saturn's gravity billions of years ago. Several tiny Saturn moons may have been blasted out of Phoebe by space impacts. "Battered and beat-up as [Phoebe] is,...