Marcelo Gleiser

饰：Himself

Jeffrey L. Bada

饰：Himself

David Deamer

饰：Himself

James Strick

饰：Himself - Author

J. William Schopf

饰：Himself

Eric Chaisson

饰：Himself

Andrew Knoll

饰：Himself

Scott Sandford

饰：Himself

Chris Wills

饰：Himself

Arlo Hemphill

饰：自己

Mary Votava

饰：自己

Robert Hazen

Robert Hazen

饰：Self - Carnegie,(as Robert Hazen)

John Polkinghorne

John Polkinghorne

饰：Self,(as Rev. John Polkinghorne)

Hazel Barton

Hazel Barton

饰：Self

Harold Morowitz

饰：Self - George Mason University

James Smith

饰：Factory of Life Foreman

Sydney Jay

饰：Adam,(as Sydney Dace)

Jonathan Kelley

饰：Lazzaro Spallanzani

罗伯·贾维斯

Rob Jarvis

饰：Self - Narrator

尼尔·德格拉塞·泰森

Neil deGrasse Tyson

饰：Self

George Coyne

George Coyne

饰：Self,(as Fr. George Coyne)

Peter Ward

Peter Ward

饰：Self

Martin Van Kranendonk

饰：Self

Dave Des Marais

饰：Self

Janet Browne

饰：Self - Harvard University

汤姆·韦德

Tom Wade

饰：Antony van Leeuwenhoek