The Wounded Sky

In "The Wounded Sky" by Diane Duane, the starship Enterprise is chosen to test the experimental Intergalactic Inversion Drive, a device designed to allow faster-than-light travel. During the test, the drive malfunctions and tears at the fabric of the universe, threatening reality itself. Captain Kirk and his crew must work against time to repair the damage and prevent the universe from collapsing. The story is set in space and involves the familiar characters from the Star Trek universe facing a cosmic-level crisis.