In Star Trek: Insurrection, what is the name of the planet with metaphasic particles?

In Star Trek: Insurrection, the planet whose rings emit rejuvenating metaphasic particles is Ba’ku.\n\nThe Ba’ku homeworld is central to the film’s conflict. Metaphasic particles from the planet’s rings create an unusual radiation environment that restores vitality and effectively halts aging for the Ba’ku. The Federation and the Son’a secretly plan to relocate the Ba’ku so they can collect this radiation for medical use.\n\nCaptain Picard rejects the scheme because forcibly removing the Ba’ku violates the Prime Directive and their right to remain on their world. The film also reveals that the Son’a are an exiled faction of the Ba’ku. They abandoned the planet generations earlier, grew physically decrepit, and sought the particles as a way to extend their lives. The other options belong to different parts of Star Trek lore: Bajor is the homeworld of the Bajorans, Veridian III is associated with Star Trek Generations, and Brax is not the planet in Insurrection. The film was released in 1998 and stars Patrick Stewart as Picard.