Sandra Bullock and George Clooney in 'Gravity'Warner Bros.

When "Gravity" debuted at the Venice Film Festival, the buzz was instantaneous -- and deafening.

The tale of two astronauts (Sandra Bullock and George Clooney) marooned in deep space after a catastrophic collision, "Gravity" seems like one of those worst-case nightmare scenarios. Which means that the thriller was (of course) photographed in immersive 3D, to make it really feel like you are drifting into infinity.

The latest trailer for the film amplifies that sensation by about a hundred degrees and sends you spinning into the cosmos. If you aren't clutching your chest and panic-breathing by the end of it, then you're doing it wrong.

A lot of the two-minute-plus preview consists of a single moment, when Sandra Bullock starts drifting into outer space. "Listen to the sound of my voice," Clooney commands. When she starts hyperventilating, using up some of her precious oxygen, Clooney says, "Sip don't gulp." We then see more flashes of action, including a lot of spacey things slamming into a lot of other spacey things, with the intensity ratcheted up to an almost unbearable degree.

If for some reason you were under the impression that Alfonso Cuarón's "Gravity," which had a long and by all accounts tortured production history, isn't one of the must-see movies of the fall, we hope you've corrected that by now.

"Gravity" is out on October 4.
Astronaut Analyzes 'Gravity' Movie Plot

Gravity Movie Poster
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Dr. Ryan Stone (Sandra Bullock) is a medical engineer on her first shuttle mission. Her commander is... Read More