Saku Oyagi returns to his old hometown in order to start school at Soei High School. On the first day, he runs into an old childhood friend: a second year named Mihoshi Akeno. As children, the two used to play together, with Mihoshi, or Mii-chan, being extremely fond of astronomy. After convincing Saku to join the school's astronomy club, another girl, Hime Makita, joins the club in hopes of winning over Saku. This is the story of the 6 club members of the Soei High School Astronomy Club as they soar through their lives, each maturing and changing their outlooks on life.
| Title | Air Date | Duration | ||
|---|---|---|---|---|
| Season 1 | Episode 1 | Welcome to the Astronomy Club! | 2009-07-07 | 25 min |
| Season 1 | Episode 2 | First Star | 2009-07-14 | 25 min |
| Season 1 | Episode 3 | Planetarium | 2009-07-21 | 25 min |
| Season 1 | Episode 4 | Until Dawn | 2009-07-28 | 25 min |
| Season 1 | Episode 5 | The Star of Words | 2009-08-04 | 25 min |
| Season 1 | Episode 6 | Pleased to Meet You | 2009-08-11 | 25 min |
| Season 1 | Episode 7 | The Moon and Sweet Osmanthus | 2009-08-18 | 25 min |
| Season 1 | Episode 8 | Illuminated Ground | 2009-08-25 | 25 min |
| Season 1 | Episode 9 | High School Astronomy Network | 2009-09-01 | 25 min |
| Season 1 | Episode 10 | Together | 2009-09-08 | 25 min |
| Season 1 | Episode 11 | That's Like White Snow | 2009-09-15 | 25 min |
| Season 1 | Episode 12 | Starry Sky Loop | 2009-09-22 | 25 min |
| Crew | Mizuho Suzuki | Production Office Assistant |
| Visual Effects | Kai Makino | CG Artist |
| Visual Effects | Takashi Hirota | CG Artist |
| Sound | Hiroyuki Suzuki | Sound Mixer |
| Sound | Noriko Izumo | Sound Effects |
| Production | Yuka Sakurai | Producer |
| Production | Tetsuko Kotani | Producer |
| Production | Asuka Yamazaki | Producer |
| Production | Yoichiro Tamura | Producer |
| Production | Chikako Furuya | Producer |
| Production | Akihiro Sekiyama | Line Producer |
| Sound | Yoshiyuki Ito | Music Producer |
| Sound | rino | Theme Song Performance |
| Sound | rino | Original Music Composer |
| Sound | Kaoru Okubo | Original Music Composer |
| Sound | Yoshikazu Iwanami | Sound Director |
| Editing | Kiyotaka Miyake | Editor |
| Editing | Hideaki Murai | Editor |
| Visual Effects | Shin Misawa | CGI Director |
| Camera | Hitoshi Saito | Director of Photography |
| Visual Effects | Shigenobu Kaihoko | Color Designer |
| Art | Yuho Taniuchi | Art Designer |
| Art | Kuniaki Nemoto | Art Direction |
| Visual Effects | Hajime Watanabe | Character Designer |
| Writing | Mami Kashiwabara | Comic Book |
| Directing | Shinji Takamatsu | Series Director |
| Visual Effects | Hajime Watanabe | Supervising Animation Director |
