Kidou Senshi Gundam Gaiden - Sora, Senku no Hate ni...
The events chronicled in this manga are also depicted in its own campaign in the Gundam: Meguriai Sora game for Playstation 2 (released in the US as Gundam: Encounters in Space), as well as a novel by Kazuki Miyamoto.
Some of the characters are seen briefly in Mobile Suit Gundam: Lost War Chronicles manga.