'Gravity's' casting history and a reported call from the space station

Looking back at 'Gravity' 13 years after its release, ATRightMovies says Alfonso and Jonás Cuarón wrote the script in three weeks after funding fell through for another project. The account says Sandra Bullock received advice from astronaut Cady Coleman, who called from the International Space Station. It also says Robert Downey Jr. left the role of Matt Kowalski after testing the film's cameras.