On screen
Cast
70 credited performers
Neil deGrasse Tyson
Self - Host
George Takei
Self
Christopher Nolan
Self
Dan Savage
Self
Arianna Huffington
Self
Richard Dawkins
Self
Chris Hadfield
Self
Biz Stone
Self
Charles Bolden
Self
Norman Lear
Self
Bill Clinton
Self
Larry Wilmore
Self
Seth MacFarlane
Self
Penn Jillette
Self
Teller
Self
Susan Sarandon
Self
David Byrne
Self
Bas Lansdorp
Self
David Crosby
Self
Brian Cox
Self
Artwork unavailable
Gina McCarthy
Self
Jimmy Carter
Self
Whoopi Goldberg
Self
Mayim Bialik
Self
Brian Greene
Self
Robert Kirkman
Self
Jeremy Irons
Self
Ben Stiller
Self
Buzz Aldrin
Self
Terry Crews
Self
Jay Leno
Self
William Shatner
Self
Ashton Carter
Self
Hope Solo
Self
Herbie Hancock
Self
Wayne Shorter
Self
Bill Maher
Self
Lance Armstrong
Self
Kareem Abdul-Jabbar
Self
Jane Goodall
Self
Katie Couric
Self
Kevin Smith
Self
Katy Perry
Self
Sylvia Earle
Self
Artwork unavailable
Fabien Cousteau
Self
Adrian Grenier
Self
James Cameron
Self
Alan Alda
Self
Stephen Colbert
Self
Sam Harris
Self
Frank Oz
Self
Kelly Slater
Self
Scott Kelly
Self
Stephen Hawking
Self
Anthony Bourdain
Self
Joe Rogan
Self
Bill Prady
Self
Simon Helberg
Self
Al Gore
Self
Jack Black
Self
Dan Rather
Self
George R.R. Martin
Self
Anna Deavere Smith
Self
Jeff Goldblum
Self
James Marsden
Self
'Weird Al' Yankovic
Self
Artwork unavailable
Patricia Cornwell
Self
Bill Nye
Self
Darren Aronofsky
Self
Christiane Amanpour
Self