Omega's space station

From Tardis Wiki, the free Doctor Who reference

Omega conducted time travel experiments aboard a space station in orbit around the black hole known as the Heart of Messina.

The space station had a large crew which included Karidice, Emiscal, Ralics, and an Engineer.

During Omega's first entrance into the Time Vortex, the station encountered a Chronovore, which killed Karidice and the engineer. Omega escaped the Chronovore by piloting the space station through the vortex, away from the black hole. The station held services for the two fallen Time Lords, before returning to Gallifrey. (PROSE: The Evil and the Deep Black Sky)