The universe after

the earth ship , the battle ship lestia was the most advanced of her kind in the battle of entrpia. the earth empire was fighting the astinid, a insectoid species. as the battle reached its climax the core was ver heating, the guns barely functional and multiple hull breaches as the ships were pounded the plasma and energy bolts. in a last ditch effort you, the chief engineer dtayed behind as the ship evacuated and ejected the core after loading it with fissal material. the resulting explosion casued a temporal rift....and killed every living thing in the battle sector.