Ready to watch Natalie Portman alone in space for two hours? Studios are betting so. After her widely praised performance in Black Swan, Warner Bros. has given the OK to Alfonso Cuaron to offer Portman the lead role in his sci-fi survival film Gravity. Casting has been going back and forth for some time with rumors that Angelina Jolie's recent departure may have sunk the movie. Here's hoping Portman keeps it alive, because that crazy opening shot still sounds awesome. [THR/Risky Business]
