At Dealine.com, Mike Felming reports that Robert Downey Jr. is negotiating to appear in GRAVITY for director Alfonso Cuaron. Previously we mentioned that Angelina Jolie turned down a shot at WANTED 2 in order to take the female lead in the film, which is an outer space thriller written by Cuarón and his 28-year-old son Jonás. Jolie and Downey will play surviving members on a remote space station damaged by an exploding satellite.