Sandra Bullock and George Clooney's highly anticipated sci-fi thriller finally hits theaters this week. Featuring the lone actors, "Gravity" is about astronauts marooned in space after an accident damages their shuttle.

But what really happens when an astronaut floats off into space? How realistic are the spacesuits? And does NASA even have safeguards in place to help astronauts who are floating away?

The Takeaway is joined by Erik Sofge, a contributing writer to Popular Science. Specializing in space, science and technology, Sofge has extensively researched space suits and survival.