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 |
| Visual Effects | Shin Misawa | CGI Director |
| Art | Yuho Taniuchi | Art Designer |
| Visual Effects | Hajime Watanabe | Character Designer |
| Art | Kuniaki Nemoto | Art Direction |
| Production | Tetsuko Kotani | Producer |
| Production | Asuka Yamazaki | Producer |
| Camera | Hitoshi Saito | Director of Photography |
| Writing | Mami Kashiwabara | Comic Book |
| Sound | Noriko Izumo | Sound Effects |
| Editing | Kiyotaka Miyake | Editor |
| Sound | Hiroyuki Suzuki | Sound Mixer |
| Sound | rino | Theme Song Performance |
| Production | Yuka Sakurai | Producer |
| Sound | Kaoru Okubo | Original Music Composer |
| Sound | rino | Original Music Composer |
| Editing | Hideaki Murai | Editor |
| Sound | Yoshiyuki Ito | Music Producer |
| Visual Effects | Shigenobu Kaihoko | Color Designer |
| Production | Yoichiro Tamura | Producer |
| Production | Akihiro Sekiyama | Line Producer |
| Sound | Yoshikazu Iwanami | Sound Director |
| Production | Chikako Furuya | Producer |
| Directing | Shinji Takamatsu | Series Director |
| Visual Effects | Hajime Watanabe | Supervising Animation Director |
