천문: 하늘에 묻는다

Choi Min-sik

as Jang Yeong-sil

Han Suk-kyu

as King Sejong

Shin Goo

as Minister

Huh Joon-ho

as Jo Mal-saeng

Kim Tae-woo

as Jeong Nam-son

Kim Won-hae

as Jo Sun-saeng

Im Won-hee

as Im Hyo-don

Park Sung-hoon

as Crown Prince Yi Hyang

Jeon Yeo-been

as Sa-im

Yoon Je-moon

as Choi Hyo-nam

Min Kyung-jin

as Shin-gae

Lee Dong-yong

as Yun Jung-bu

Kim Seung-hoon

as Choi Man-ri

Kim Seung-tae

as Choi Cheon-gu

Choi Jae-sup

as Yun Sa-wung

Lee Seo-hwan

as Eunuch Jeong

Ryu Ji-hoon

as Jo Seo-gang

Bae Je-gi

as King's Soldier

Hyun Bong-sik

as Baek-ho