Academy Award® winners Sandra Bullock (The Blind Side) and George Clooney (Up in the Air, Syriana) star in this heart-pounding thriller written, directed and produced by Oscar® nominee Alfonso Cuarón (Children of Men) and set in the infinite and unforgiving realm of deep space. Bullock plays a brilliant medical engineer on her first shuttle mission, with Clooney as a veteran astronaut in command of his last flight before retiring. But on a seemingly routine spacewalk, disaster strikes. The shuttle is destroyed, leaving the two completely alone -- tethered to nothing but each other and spiraling out into the blackness. The deafening silence tells them they have lost any link to Earth...and any chance for rescue. As fear turns to panic, every gulp of air eats away at what little oxygen is left. But the only way home may be to go further out into the terrifying expanse of space.