Sul Kyung-gu

Character: Kim Jae-guk

Doh Kyung-soo

Character: Hwang Sun-woo

Kim Hee-ae

Character: Yoon Moon-yeong

Park Byung-eun

Character: Jeong Min-gyu

Cho Han-cheul

Character: The Minister

Choi Byung-mo

Character: The Vice Minister

Hong Seung-hee

Character: Kang Han-byul

Lee Sung-min

Character: Hwang Gyu-tae

Kim Rae-won

Character: Lee Sang-won

Lee Yi-kyung

Character: Cho Yoon-jong

Choi Jung-woo

Character: The President

Park Seon-yeong

Character: Narrator

Brad Little

Character: NASA Administrator

Paul de Havilland

Character: NASA Deputy Administrator

Jonathan Ehren Groff

Character: James Glenn

Brian M. Van Hise

Character: Andy Walker

Gina Theresa Williamson

Character: Julie Anderson

Jack Lyons

Character: William Jones

Baek Seung-chul

Character: Rescue Leader

Han Soo-hyun

Character: FDO

Kim Dong-hwan

Character: INCO

Chun Sin-hwan

Character: Guidance

Lee Sang-won

Character: Prop

Yeom Ji-young

Character: Telmu

Lee Yoon-jae

Character: Doctor 1

Choi Dae-sung

Character: Doctor 2

Cha Young-ju

Character: Space Center Staff

Kang Jun-seok

Character: Space Center Staff

Jung Yun-ha

Character: TM/TC

Choi Pil-sang

Character: Space Center Staff

Jason Lane Cutler

Character: CNN anchor