Dr. Stephen Petranek

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SAN DIEGO - JULY 19: Co-Executive Producer Dr. Stephen Petranek during the panel for National Geographic's "When Earthlings Become Martians: ‘Mars’ Season 2" at the 2018 San Diego Comic-Con International on July 19, 2018 in San Diego, California. (Photo by Frank Micelotta/National Geographic/PictureGroup)
SAN DIEGO - JULY 19: Co-Executive Producer Dr. Stephen Petranek during the panel for National Geographic's "When Earthlings Become Martians: ‘Mars’ Season 2" at the 2018 San Diego Comic-Con International on July 19, 2018 in San Diego, California. (Photo by Frank Micelotta/National Geographic/PictureGroup)
Filename: NG_SDCC_071918_040.JPG
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