The Vostok Academy was a facility constructed on the planet Mercury at some point in the 22nd century. It continued to be a valuable facility for Starfleet and the United Federation of Planets for the next two hundred years.
In 2381 during destruction of numerous warp capable ships around the galaxy as a result of the Totality - Starfleet Command transferred its posting to the Vostok Academy at Mercury in Sector 001. This was because of the worlds higher gravity which seemed to prevent any manifestation by the dark matter based lifeform that was the Totality. (TOS novel: Captain's Glory)
- Vostok Academy was most probably called after Vostok 1 who carried the first man in space