The Godsend Incident: Children of Rost'aht, Book One. Children of Rost'aht, #1

The entity known as the Faceless nearly destroyed Humanity. Only at the last moment, and at tremendous cost, did we prevail. That victory left a mystery in its wake. What was the source of the enemy's terrifying and destructive power? The answer may be hidden in a star system called Godsend, from which the Faceless launched its war of extermination. But Godsend was lost to the rest of the galaxy, its links to other systems severed when the Faceless disrupted space and time in its final assault on Humankind and its allies. Now, twenty years later, the way to Godsend has finally opened.
Two expeditions will be sent to investigate. One seeks answers to questions, the other to exploit anything the Faceless left behind. But the Faceless left more than secrets in that star system, and both expeditions will be lucky to leave Godsend alive.