Director
Main Role
- Sul Kyung GuKim Jae GukMain Role
- Doh Kyung SooHwang Seon WooMain Role
- Kim Hee AeYoon Moon Young / Jennifer EvansMain Role
Support Role
- Park Byung EunJeong Min Gyu [Head of the Aerospace Center]Support Role
- Jo Han ChulKim In Sik [Minister]Support Role
- Choi Byung MoOh Kyu Seok [Vice minister]Support Role
- Hong Seung HeeKang Han ByeolSupport Role
- Choi Jung Woo[President]Support Role
Guest Role
- Lee Sung MinHwang Gyu Tae [Sun Woo's father]Guest Role
- Kim Rae WonLee Sang WonGuest Role
- Lee Yi KyungCho Yoon JongGuest Role
- Lee Chun Moo[Moon Young's son]Guest Role
- Jo Seung Yun[Doctor in the news]Guest Role
- Shim Young Eun[Staff 2]Guest Role
Bit part
- Choi Hyoung Uk[Naro Space Center staff]Bit part
Unknown
- Honey Chae Unknown
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