Fiction:Ra'zac Dimension

The Sha'Zor universe was once the home universe of the Ra'Zac, until the great Infection spread to it and it became nothing more than a husk of it's former glory. The Ra'zac left this Universe because of this, and destroyed the only gateway to it, the Asteroid Portal called Ghalmor-X. If there is another way to it, it is not within the galaxies.