The planet was surrounded by a series of saturnine rings which produced a type of metaphasic radiation that had great rejuvenating effects and endowed the inhabitants with great longevity. The Federation established a duck blind observation post on Ba'ku in 2375 as a joint operation with the Son'a. This led to what would become known as "the Ba'ku incident" or the "Dougherty scandal". (Star Trek: Insurrection) Ro Nevin and Corey Aster were married on Ba'ku in 2383. (Star Trek: Hidden Frontier: "Its Hour Come Round At Last")