Blake Lively and Scarlett Johansson are battling it out for the chance to star in Gravity.

A film about astronauts repairing the Hubble telescope who are hit with an avalanche of satellite junk. In a plot akin to “Cast Away,” the surviving astronaut must fight her way back to Earth, where she hopes to reunite with her daughter.

The project originally was set up at Universal as a vehicle for Angelina Jolie, but it moved to Warners, where it hit debris of its own: Jolie left the project, partially because of the studio’s balking at paying her £10 million fee.

Both actresses are repped by CAA. Blake is also is repped by Untitled Entertainment.