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Space Brothers (宇宙兄弟, Uchū Kyōdai) is a Japanese Science fiction manga series by Koyama Chūya which has been serialized in Kodansha's Weekly Morning since January 2008.
The plot tells the story of Nanba Hibito and Nanba Mutta, two brothers who become involved in space exploration.
It has been nominated twice for the Manga Taishō, in 2009 and 2010. In 2011, it won the award for best general manga at the 56th Shogakukan Manga Awards and at the Kodansha Manga Award (shared with Umino Chica's March Comes in Like a Lion).
An anime adaptation by A-1 Pictures began airing in Japan from April 1, 2012.
It was also adapted into a live action film that premiered on May 5, 2012.