Planet Nine: Isotropy

Planet Nine: Isotropy is the third extended play by the South Korean band Onewe. It was released by RBW and distributed by Kakao Entertainment on April 17, 2024. The EP is the third in the band's Planet Nine series, following their EPs Planet Nine: Alter Ego and Planet Nine : Voyager. It consists of six songs, written by each of the five members of the band, including the lead single "Beautiful Ashes".

Background and release
On January 11, 2024, the band's leader Yonghoon completed his mandatory military service, followed by their guitarist Kanghyun who was discharged on February 1, returning the band to their complete quintet form.

On March 27, 2024, Onewe released a teaser and schedule plan announcing they will be returning with their third EP Planet Nine: Isotropy on April 17. To commemorate the release of the album, they will also be holding their O! New E!volution III concert on May 4 and 5.

On March 30, the full track list was revealed with a total of six tracks, written and composed by each of the five members of Onewe, including the lead single "Beautiful Ashes".