Beyond the Gravastar

From publisher blurb:

==A Hole in Space!
==A Dimension of Terror!
Every alien race that the Patrol has encountered tells stories—tales of evil, legends of destruction. Each race tells a slightly different story, but the core is the same: there is a great race of alien intent on controlling the cosmos—and destroying what they can't control. These are the mythic Metatherions and now it's humanity's turn to take on this seemingly invincible foe.

Beyond the Gravastar pits the heroes of humanity against an evil race so powerful that it can control the very fabric of space and time. Can you overcome this cosmic evil? Go beyond the gravastar and find out!