files/pictures/picture-35.jpgNatalie Portman has been offered the lead role in Alfonso Cuaron's GRAVITY, reports Risky Business
. Written by Cuaron and his son Jonas, the story would put Portman lost in space after satellite debris crashes into her ship killing the rest of her crew. Angelina Jolie recently backed away from the project.
Robert Downey Jr. is attached in a supporting role.
The 3D space epic has a budget of $80 million. Production will begin in January.