The Avengers

The Disney and Marvel superhero tentpole will reach the milestone on Tuesday; its worldwide gross is now $1.44 billion.

Joining an elite pantheon, Joss Whedon’s The Avengers will cross the $600 million mark at the domestic box office on Tuesday, becoming only the third film in history to do so.

A pair of James Cameron pics hold the Nos. 1 and 2 spots, with Avatar grossing $760.5 domestically and Ttiantic $658.8 million.

PHOTOS: Behind the Scenes of Marvel’s The Avengers

From Disney and Marvel Studios, Avengers ranks No. 3 on the list of global grossers with a take of $1.44 billion. In North America, it’s been No. 3 for weeks after eclipsing the $533 million earned by The Dark Knight. Internationally, it ranks No. 4 ($838.9 million).

The 3D tentople has been a runaway hit since opening in early May. In North America, it debuted to a massive $207.4 million — the largest opening of all time. It has broken a number of other records, including becoming the fastest film to hit $200 million, $300 million, $400 million and $500 million.

Only a dozen films have reached $1 billion in global grosses. That list includes five Disney titles — Avengers, Pirates of the Caribbean: Dead Man’s Chest, Alice in Wonderland, Toy Story 3 and Pirates of the Caribbean: On Stranger Tides.