Star Trek: Deep Space Nine (sometimes abbreviated to DS9) is a science fiction television series set in the Star Trek universe in the Milky Way galaxy, in the years 2369–2375. In the beginning of season 7, with the Bajoran wormhole collapsed, Sisko struggles for a way to contact the Bajoran Prophets. Kira opens a Romulan military hospital, and a new Dax appears on the scene.