彼得·詹宁斯

Peter Jennings

饰：Himself

Jesse Marcel

饰：Himself

阿尔特·贝尔

Art Bell

饰：Self - Radio Host, Coast to Coast

Mike Fortson

饰：Self - Phoenix Lights Witness

Jerome Clark

饰：Self - Author, The UFO Encyclopedia

J. Allen Hynek

饰：Self - Lead Scientist, Project Blue Book,(archive footage)

Michael Shermer

Michael Shermer

饰：Self - Publisher, Skeptic Magazine

Frank Drake

饰：Self - SETI Researcher

Jesse Marcel Jr.

饰：Self - Roswell Debris Witness,(as Dr. Jesse Marcel Jr.)

Stanton Friedman

饰：Self - UFO Researcher

Budd Hopkins

饰：Self - Abduction Researcher

加来道雄

Michio Kaku

饰：Self - Physicist

William J. Konkolesky

饰：Self

Mark Rodeghier

饰：Self - Center for UFO Studies

Michael Swords

饰：Self - Professor, Western Michigan University

尼尔·德格拉塞·泰森

Neil deGrasse Tyson

饰：Self - Director, Hayden Planetarium

Jill Tarter

饰：Self - Director, Center for SETI Research

Seth Shostak

饰：Self - Senior Astronomer, SETI Institute

Karl Pflock

饰：Self - Author, Roswell

Susan Clancy

饰：Self - Research Fellow, Harvard University