Distributia
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Erik DellumsNarrator (voice) (as Erik Todd Dellums)
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Michio KakuHimself - Theoretical Physicist, City University of New York (as Prof. Michio Kaku)
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Russell SchweickartHimself - Apollo 9 Astronaut, B612 Foundation (as Rusty Schweickart)
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Mike RoweNarrator (voice)
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Dan DurdaHimself - Planetary Scientist, Southwest Research Institute (as Dr. Dan Durda)
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Barack ObamaHimself - U.S. President, April 15, 2010 (archive footage)
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Peter SchultzHimself - Impact Specialist, Brown Universiy (as Prof. Peter Schultz)
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Phil PlaitHimself - Astronomer, Discover Magazine (as Dr. Phil Plait)
