Twin Spica (ふたつのスピカ, Futatsu no Supika?) is a Japanese science fiction manga series by Kō Yaginuma. It began serialization in the seinen magazine Comic Flapper in January 2001. Twin Spica tells the story of a group of Japanese high school students training to become astronauts.
The manga has been adapted by Group TAC as a 20-episode anime television series that first aired on NHK's BS-2 satellite service between 1 November 2003 and 27 March 2004. The anime has been translated into English and other languages by the anime television network Animax, which has broadcast the series on its networks in several regions, including East Asia, Southeast Asia, South Asia and Latin America.
The series title comes from the binary star system Spica. It is the brightest star in the constellation Virgo and one of the brightest stars in the sky. Spica is really two stars that circle each other, though from a distance they appear as one, which parallels the series' running theme of friendship.