If you're in the mood for an early afternoon panic attack, try watching the the gripping, anxiety-inducing new trailer for Alfonso Cuarón's space thriller, Gravity. The clip opens with Sandra Bullock's Dr. Ryan Stone getting cut off from her spaceship and tumbling through space, unable to get her bearings. It seems as if she makes it back to a space station safely (or perhaps that's a cut from before), where she must try to recover and survive floating adrift in the final frontier alongside George Clooney's Matt Kowalsky. It looks like Cuarón's got plenty of disastrous tricks up his sleeve. Gravity opens October 4th. Don't forget to bring a brown paper bag to breathe into.