Aidan Gillen

Allen Hynek

Michael Malarkey

Michael Quinn

Laura Mennell

Mimi Hynek

Ksenia Solo

Susie Miller

Neal McDonough

James Harding

Michael Harney

Hugh Valentine

Nicholas Holmes

Joel Hynek

Jill Morrison

Faye

Ian Tracey

Fixer

Matt O'Leary

Henry Fuller

Robert John Burke

William Fairchild

Jerod Haynes

Daniel Banks

Currie Graham

Cal Miller

Keir O'Donnell

Evan Blake

Michael Imperioli

Edward Rizzuto

Caspar Phillipson

John F. Kennedy

Sofia Milos

Daria

Heather Doerksen

Donna Smith

Zach McGowan

Duncan Booker

Spencer Garrett

Ryan Blackstone

Bob Gunton

Harry S. Truman

Thomas Kretschmann

Wernher von Braun

Bronson Pinchot

David Dubrovsky

Nolan Hupp

Eric

Jason Burkart

Greg

Christopher Heyerdahl

Edmund

Graham Greene

David

Rohan Campbell

Rourke

Steven Williams

Nate

Dave Cameron

Panel Member (uncredited)