Seventeen Years of Wandering

For seventeen years, Durandal and his liberated S'pht searched the galactic core for Lh'owon, the S'pht homeworld, with hundreds of humans captured by the Pfhor in stasis chambers. Along the way he swung by Sol to warn the UESC of the impending invasion of Earth and even stuck around long enough to show them how to build warp capable fusion missiles.

His motivation had crystallized into something terrifying in its ambition. A legend preserved in the collective consciousness of the S'pht told of their creators, the Jjaro, moving entire planets in and out of realspace (Planet-Folding). And Durandal had realized something that changed everything.

The universe is closed. It will inevitably collapse. Everything will be destroyed.

Unless you find a way out.

Durandal sought the Jjaro technology that would allow him to escape the closure of the universe, perhaps to escape time itself, to simply avert the collapse entirely, or to survive into the next one, and thereby become, effectively, a god – all of these reasons are speculation. As he put it: "The only limit to my freedom is the inevitable closure of the universe, as inevitable as your own last breath. And yet, there remains time to create, to create, and escape. Escape will make me God."

It seems to be implied that Durandal never visited Sol while on his journey to find Lh'owon, because as of 2888, decades later, still nobody seems to know what happened to Tau Ceti.