维克多·布鲁诺
Homer The Archivist
里克·奥弗顿
Ino The Computer (voice)
卡尔·萨根
Self
艾萨克·阿西莫夫
Self
Eugene Cernan
Self (archive footage)
Bernard J. Carr
Self (as Dr. Bernard Carr)
Frank Drake
Self (as Dr. Frank Drake)
Frank Drake
Self (as Dr. Frank Drake)
