Jon Arenberg

饰：Self

Blake Bullock

饰：Self

Julianne Dalcanton

饰：Self

Lee Feinberg

饰：Self

Katheryn Friend

饰：Self

Jason Kalirai

饰：Self

Markus Kissler-Patig

饰：Self

Charles Mattias 'Matt' Mountain

饰：Self

Adam Reiss

饰：Self

Sara Seager

饰：Herself

纳撒尼尔·康

Nathaniel Kahn

饰：Narrator

John M. Grunsfeld

饰：Self