  We propose a new dynamical model for capture of irregular moons which
identifies chaos as the essential feature responsible for initial temporary
gravitational trapping within a planet's Hill sphere. The key point is that
incoming potential satellites get trapped in chaotic orbits close to "sticky"
KAM tori in the neighbourhood of the planet, possibly for very long times, so
that the chaotic layer largely dictates the final orbital properties of
captured moons.
