Aozora no Planetarium

 (青空のプラネタリウム) was an idol group that originally debuted under the name Peta (ぺたっ) in June 2019.

They stopped activities in March 2020. They changed to their new name the next month, but did not re-debut until August 16, 2020.

They stopped activities again in March 2022. In May 2022, the successor group NSTAR was announced featuring four of the six members of the final line-up. However, NSTAR's debut was cancelled in June 2022.

Current Members

 * Mizuki Himeno (聖月ヒメノ; ) (Founding member)
 * Asahi Nako (朝比ナコ; ) (Founding member)
 * Shiina Miku (椎奈ミク; ) (Joined August 22, 2021)
 * Suzukaze Aina (涼風アイナ; ) (Joined August 22, 2021)
 * Onodera Yuna (小野寺ユナ; ) (Joined October 19, 2021)
 * Hamabe Mari (浜辺マリ; ) (Joined October 19, 2021)

Former Members

 * Yotsuba Yumeko (四つ葉ゆめこ; ) (Founding member; graduated September 2019)
 * Mizushima Suu (水嶌すう; ) (Founding member; left November 7, 2019)
 * Akamine Sana (朱峰さな; ) (Founding member; graduated March 2020)
 * Hinata Mikan (日向みかん; ) (Founding member; graduated March 2020)
 * Hinata Ema (雛田エマ; ) (Joined August 2020; graduated February 6, 2021)
 * Hayama Momo (葉山モモ; ) (Joined December 23, 2020; graduated June 15, 2021)
 * Usami Anna (宇佐見アンナ; ) (Joined August 2020; graduated September 28, 2021)

Digital Singles

 * [2019.09.20] Puwapuwa (ぷわぷわ) (as Peta)
 * [2020.01.22] Dangan Shooting Star (弾丸シューティングスター) (as Peta)
 * [2020.11.13] Hashiridashita Yume (走り出したユメ)
 * [2021.03.31] Connect
 * [2021.03.31] Asterism! (アステリズム!)
 * [2021.03.31] Aozora no Milky Way (青空のミルキーウェイ)
 * [2021.04.04] Miracle Party (ミラクルパーティー)
 * [2021.04.04] Kimi Renbo (きみ恋慕)
 * [2021.12.07] walk on blue
 * [2022.01.05] Miracle Party (New Version) (ミラクルパーティー (New Version))
 * [2022.01.05] Hashiridashita Yume (New Version) (走り出したユメ (New Version))
 * [2022.01.05] Connect (New Version)
 * [2022.01.05] Kimi Renbo (New Version) (きみ恋慕 (New Version))
 * [2022.01.05] Asterism! (New Version) (アステリズム! (New Version))
 * [2022.01.05] Aozora no Milky Way (New Version) (青空のミルキーウェイ (New Version))
 * [2022.01.18] Mirai no Seikansen (未来の星間線)