Warhawk

Commander Apollo, having successfully beaten the Cylons in a deadly space battle, leads the Galactica and the fleet into unexplored territory in search of the Thirteenth Tribe. Guided by the holomap discovered on an abandoned Cylon outpost, they set course for a mysterious world that may or may not be the legendary planet Earth. But they are not alone in this sector of space. The Cylons continue to expand outward in the same direction. And this area of the galaxy is not uninhabited. Both the Cylons and the Galactians are confronted by the Chitain, a completely alien race more warlike and fearsome than anything previously encountered. Once there, Apollo makes the discovery of a lifetime - the planet isn't Earth, but it was once the home of an ancient colony started by the Thirteenth Tribe.