Jeffrey Kargel

饰：Self,(as Professor Jeffrey Kargel)

Ashley Davies

饰：Self

Laszlo Keszthelyi

饰：Self,(as Professor Laszlo Keszthelyi)

Ralph Lorenz

饰：Self,(as Dr. Ralph Lorenz)

Randy Tufts

饰：Self,(as Dr. Randy Tufts)

Jody Deming

饰：Self

约翰·利思戈

John Lithgow

饰：Narrator

Rosaly Lopes

饰：Herself

Dan Durda

饰：Himself

Philip R. West

饰：Himself

Eugene Cernan

Eugene Cernan

饰：Himself

Richard Terrile

Richard Terrile

饰：Himself