While Alfonso Cuarón's highly anticipated thriller "Gravity" has been receving critical praise since its screenings at the Venice and Telluride film festivals, it's now getting a thumbs up from "Avatar" director James Cameron.

Variety has reported that "Gravity" is a game-changer in a way that 2009's "Avatar" was, and its director agrees.

"I was stunned, absolutely floored," he told Variety. "I think it's the best space photography ever done, I think it's the best space film ever done, and it's the movie I've been hungry to see for an awful long time."

While the state of the art technology in the film is said to be impressive, Cameron was more impressed with Cuarón's tenacity and vision for the film, as well as Sandra Bullock's performance.

"What is interesting is the human dimension," Cameron said. "Alfonso and Sandra working together to create an absolutely seamless portrayal of a woman fighting for her life in zero gravity."

Cameron's "Avatar" and "Titanic" remain two of the highest grossing films of all time.

According to Variety, film director David Fincher ("The Social Network," "The Girl with the Dragon Tattoo") warned Cuaron and cinematographer Emmanuel Lubezki that they'd have to wait five years from when the first thought of "Gravity", as technology to make the movie didn't exist. Warner Bros. reportedly bankrolled the film production at around $100 million.

"We were stubborn, (and) said we're going to make it work," Cuarón told Variety. "But you know what? David was right. It took us 4½ years."

The 91-minute film follows two astronauts, mission specialist Ryan Stone (Bullock) and commander Matt Kowalsky (George Clooney), who fight to survive after debris hits their shuttle and sends them flying out into space. A hot new extended trailer takes a deeper look into Bullock as Stone, who struggles to breathe as she gets pulled out into space.

The intense space thriller is Cuarón's first movie since 2006's sci-fi hit "Children of Men," which earned Oscar nominations for Best Adapted Screenply and Editing. His spanish language film "Y Tu Mamá También" was nominated for Best Original Screenplay in 2003.

"Gravity" will be released in theaters on Oct. 4. Take a look a the new trailer below.