Alan Bean
В роли: Self - Apollo 12 Astronaut

Leroy Chiao
В роли: Self - NASA Astronaut and ISS Commander

Walter Cunningham
В роли: Self - Apollo 7 Astronaut

Эрик Делланс
В роли: Narrator (как Erik Todd Dellums)

David Dickinson
В роли: Self - Science Writer

Patricia Driscoll
В роли: Self - CEO, Frontline Defense Systems

Paul Epley
В роли: Self - Det. Sergeant, Los Altos Police Department, ret.

Matt Genge
В роли: Self - Planetary Scientist

Andrew Gough
В роли: Self - Journalist

Dr. Kevin R. Grazier
В роли: Self - Planetary Scientist (как Kevin Grazier)

Joe Gutheinz
В роли: Self - Retired NASA OIG Senior Special Agent (как Joseph Gutheinz)

James W. Huston
В роли: Self - Author and Defense Expert

Robert Kayen
В роли: Self - Professor, UCLA & U.S. Geological Survey

Pascal Lee
В роли: Self - Planetary Scientist

Jason Major
В роли: Self - Science Writer

Scott McCrossin
В роли: Self - Captain, Los Altos Police Department

James McGaha
В роли: Self - Astronomer and Retired USAF Pilot

Chris McKay
В роли: Self - Planetary Scientist, NASA Ames Research Center

Steven Miller
В роли: Self - Research Scientist, Colorado State University

James E. Oberg
В роли: Self - Space Historian (как James Oberg)

Christopher Orwoll
В роли: Self - Director, New Mexico Museum of Space Historym

Robert Pearlman
В роли: Self - Space Historian

Nick Pope
В роли: Self - Defense Analyst

Patricia Reiff
В роли: Self - Professor, Physics and Astronomy

Curtis Seaman
В роли: Self - Atmospheric Scientist, Colorado State University

Mark Stenhoff
В роли: Self - Author and Ball Lightening Researcher

Amy Shira Teitel
В роли: Self - Space Historian and Author

Al Worden
В роли: Self - Apollo 15 Command Module Pilot