Reparto (por orden de créditos)
William Shatner
Self - Host
Michio Kaku
Self - Author
Rod Pyle
Self - Editor-in-chief: Ad Astra Magazine
Ben McGee
Self - Planetary Geophysicist
Graham Lau
Self - Research Investigator: Blue Marble Space
Paul Sutter
Self - Author, Your Place in the Universe
Rebecca Boyle
Science Writer
Pascal Lee
Self - Planetary Scientist, SETI Institute
Jason Wright
Self - Prof. of Astrophysics, Penn State
Michael Dennin
Self - Physicist, UC Irvine
Edward Schwieterman
Self - Prof. of Astrobiology, UC Riverside
Anna Gülcher
Cal-Tech
Amy Shira Teitel
Self - Author, Breaking the Chains of Gravity
Veronica Bray
Self - Prof. of Planetary Science, Univ. of Arizona
Nick Pope
Self - UK Ministry of Defence: 1985-2006
Steven Trimble
Self - Defense Editor: Aviation Week Magazine
Mike Brown
Self - Planetary Astronomer, CalTech
Jacob Haqq Misra
Self - Research Scientist: Blue Marble Space
Susan Karlin
Self - Journalist: Fast Company
Rakesh Mogul
Self - Prof. of Biological Chemistry, Cal Poly Pomona
Robert Schoch
Self - Geologist, Boston University
Kalpana Pot
Self
David Tholen
Self - Astronomer, Univ. of Hawaii
Joseph O'Rourke
Self - Planetary Scientist, Arizona State Univ.
Alex Young
Self - Astrophysicist, NASA Goddard SFC
Konstantin Batygin
Self - Prof. Planetary Science, CalTech
Paul Byrne
Self - Planetary Scientist, Washington Univ. in St. Louis
Stephen Kane
Self - Prof. of Planetary Astrophysics, UC Riverside
Katherine de Kleer
Self - Asst. Prof. of Planetary Science, CalTech
Adam Frank
Self - Author, The Little Book of Aliens
Nicholeen Viall
Self - Research Astrophysicist, NASA Goddard SFC
Mark Showalter
Self - Senior Research Scientist, SETI Institute
Stuart Clark
Self - Author, The Sun Kings
Jonathan Young
Self - Founding Curator, Joseph Campbell Archives
Alisha Clark
Self - Planetary Scientist, CU Boulder
Iwan Morus
Self - Prof. of History, Aberystwyth University
Richard Hoover
Self - Astrobiologist
Michael Way
Self - Planetary Scientist, NASA Goddard Institute for Space Studies
Timothy Lyons
Self - Prof. of Biogeochemistry, UC Riverside
Seth Shostak
Self - Senior Astronomer, SETI Institute
Renu Malhotra
Self - Astrophysicist, Univ. of Arizona
Robert Herrick
Self - Prof. of Earth Sciences, Univ. of Alaska Fairbanks
Travis Taylor
Aerospace Engineer
Chris Mason
Self - Author, The Next 500 Years: Engineering Life to Reach New Worlds
Demian Saffer
Self - Director, UT Institute for Geophysics
Kirsten Siebach
NASA
Dominic Steavu
Self - Assoc. Prof., UC Santa Barbara
Nathalie Cabrol
Self - Director, SETI Institute
Kelsi Singer
Self - Planetary Scientist
Brad Hansen
Self - Prof. of Physics & Astronomy, UCLA
Julie Klinger
Self - Geographer, Univ. of Delaware
Karen Meech
Self - Astronomer, University of Hawaii
Matthew Cox
Self - Program Management Director: Lockheed Martin
Matthew Standing
Self - Astronomer
Trent Tresch
Self - Director, Center for Human Space Exploration
Shannon Curry
Self - Planetary Physicist, UC Berkeley
Clara Sousa-Silva
Self - Asst. Prof. of Physics, Bard College
Jennifer Delavan
Self - Juno Spacecraft Engineer: Lockheed Martin
Julie Swarstad Johnson
Self - Imagination 1 Crew Member
Tammy Ma
Self - Plasma Physicist, National Ignition Facility
Avi Loeb
Self - Chair of Astronomy, Harvard University
Gordon Brunton
Self - Director, National Ignition Facility
Bill Birnes
Jeff Coughlin
Self - Astrophysicist, SETI Institute
Beth Shapiro
Self - Prof. Evolutionary Biology, University of Santa Barbara