Gravity official HD teaser trailer from Warner Bros.

Warner Bros. has released the official teaser trailer for Gravity starring Oscar-winner Sandra Bullock and George Clooney. Gravity takes you to deep space where a space shuttle accident leaves astronauts drifting alone. The film was directed by Alfonso Cuarón (Children of Men), and co-written by Cuarón and Jonás Cuarón (The Shock Doctrine). Gravity is slated to hit theaters on October 4, 2013.