Marvel has been a reliable source of great comic book movies, which is why we're so excited about the upcoming 'Guardians of the Galaxy.' Production is underway on the film, which is shooting in London with stars like Chris Pratt, Zoe Saldana, Glenn Close and Benicio Del Toro. We've put together a gallery of 'Guardians of the Galaxy' photos and behind-the-scenes images to keep you up to date on Marvel's upcoming "space opera." 

Unlike 'Captain America' or 'Iron Man,' 'Guardians of the Galaxy' isn't a commercial Marvel project. It does feature a talking raccoon superhero, after all. But it's the more unconventional aspects of the film that have us most interested in seeing how director James Gunn translates this world to the big screen.

Chris Pratt ('Parks and Recreation') plays Star-Lord, the leader of an interstellar team of heroes including characters Drax the Destroyer (former pro-wrestler Dave Bautista), Gamora (Saldana), Rocket Raccoon (voiced by Bradley Cooper) and Groot (voiced by Vin Diesel). Together, the team face alien threats and fight to keep peace in the universe. Also joining Pratt in the film are Michael Rooker, Lee Pace, Karen Gillan and Ophelia Lovibond.

We've been keeping tabs on all the 'Guardians of the Galaxy' photos in anticipation of the film's August 1, 2014 release. Check out the official images and behind-the-scenes pics below.

Official Stills

Guardians of the Galaxy Photo
Marvel/USA Today
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Guardians of the Galaxy Photo
Marvel/USA Today
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Guardians of the Galaxy Photo
Marvel/USA Today
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Guardians of the Galaxy photos
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Guardians of the Galaxy photos
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Guardians of the Galaxy photos
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Guardians of the Galaxy photos
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Guardians of the Galaxy photos
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Guardians of the Galaxy photos
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Guardians of the Galaxy photos
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Guardians of the Galaxy photos
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Guardians of the Galaxy photos
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Guardians of the Galaxy photos
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Guardians of the Galaxy photos
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Concept Art

Guardians of the Galaxy Photos Concept Art
Marvel
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Guardians of the Galaxy Photos Concept Art
Marvel
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Guardians of the Galaxy Photos Concept Art
Marvel
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Guardians of the Galaxy Photos Concept Art
Marvel
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Guardians of the Galaxy Photos Concept Art
Marvel
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Guardians of the Galaxy Photos Concept Art
Marvel
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Guardians of the Galaxy Photos Logo
Marvel
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Behind the Scenes

Guardians of the Galaxy Photos
Getty Images
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Guardians of the Galaxy Photos
Getty Images
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Guardians of the Galaxy Photos
Getty Images
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Guardians of the Galaxy Photos
Getty Images
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Guardians of the Galaxy Photos
Getty Images
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Guardians of the Galaxy Photos Props
Marvel
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Guardians of the Galaxy Photos Props
Marvel
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Guardians of the Galaxy Photos Props
Marvel
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Guardians of the Galaxy Photos Props
Marvel
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Guardians of the Galaxy Photos Props
Marvel
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Guardians of the Galaxy Photos Props
Marvel
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Guardians of the Galaxy Photos Props
Marvel
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