The Hollywood Reporter states that Warner Bros. has landed George Clooney as the second main lead in Gravity.

Clooney replaces Robert Downey Jr. in this thrilling space drama. We reported back in October that Downey had left the project due to scheduling conflicts with Sherlock Holmes II. That report also indicated that Sandra Bullock was locked in as the main character, which has now been confirmed.

Alfonso Cuarón is directing from a script he co-wrote with his son, Jonás Cuarón. The story centers on Sandra Bullock's character, a female astronaut who becomes trapped in space after debris wipes out her space station. While the movie largely revolves around the female character, George Clooney's male lead is said to play a pivotal role in the story as well.

Related: Watch the Gravity Spin-Off Short Aningaaq

Production will get under way next spring, after George Clooney finishes shooting his latest directorial project, The Ides of March.