. . "The space station Deep Space 9 had at least forty-one numbered levels, each with its own uses and characteristics. (Star Trek: Deep Space Nine) File:DS9 MSD.png"@en . "The space station Deep Space 9 had at least forty-one numbered levels, each with its own uses and characteristics. (Star Trek: Deep Space Nine) File:DS9 MSD.png"@en . . "Deep Space 9 levels"@en . .