Steven Kearney
В роли: Self - Narrator (голос)

Mark Altaweel
В роли: Self - Phd., Satellite Archaeologist

Michael Barratt
В роли: Self - Astronaut, NASA (как Mike Barratt)

Brittany Brand
В роли: Self - Phd., Geologist, Bosie State University

Michael Capps
В роли: Self - Technology Analyst

Randy Cerveny
В роли: Self - Meteorologist, Arizona State University

Jon Coulston
В роли: Self - Phd., Ancient Historian

Kevin Evans
В роли: Self - Geologist, Missouri State University

Andrew Gough
В роли: Self - Journalist

Nick Hansen
В роли: Self - Military Analyst, Stanford University

Katharyn Hanson
В роли: Self - Phd., Archeologist (как Kathryn Hanson)

Jonathon Hill
В роли: Self - Satellite Image Analyst: Arizona State University

Mark Horton
В роли: Self - Professor, Archaeologist

Roland Kays
В роли: Self - Phd., Biologist, North Carolina Museum of Natural History

Alan Lester
В роли: Self - Geologist

Nick Middleton
В роли: Self - Explorer

Erdene Myagmar
В роли: Self - Archaeologist

Rob Nelson
В роли: Self - Biologist

Sean O'Connor
В роли: Self - Military Analyst

Mike Pavelec
В роли: Self - Phd., Military Historian

Nick Pope
В роли: Self - Military Analyst

Raphael Scriba
В роли: Self - Journalist

David Thomas
В роли: Self - Phd., Archeologist

Walter Tschinkel
В роли: Self - Phd., Entomologist, Florida State University

Chandra Wickramsinghe
В роли: Self - Phd., Astrobiologist, University of Buckingham (как Chandra Wickramsinghe)