New York, Jan 25 (DPA) Science fiction epic 'Avatar' continues to dominate the US box office, leading ticket sales for the sixth-straight weekend.

James Cameron's 3D story of blue-skinned aliens earned $36 million on the weekend, and has brought in a total of $552 million in the US alone since opening. The hit has surpassed the Batman film 'The Dark Knight' (533 million) for second place on the all-time highest earning movies, but still trails Cameron's 1997 hit 'Titanic' (601 million).

On the weekend, horror flick 'Legion' opened at second place with $18.2 million. 'The Book of Eli' starring Denzel Washington as a post apocalyptic hero fell to third place with $17 million.

Comedy 'Tooth Fairy' with $14.5 million and 'The Lovely Bones' with $8.8 million rounded out the top five.