Cygnus Space Opera Books 1 to 3: Humanity Comes Home

From space they came to space they returned. Humanity would not be denied. The crew trains for their mission and joins the Cygnus-12 as it tests the Interstellar Space Engine, venturing far beyond anywhere they've gone before. They didn't expect to find life, but they did, another human colony at the far reaches of space. The Cygnus-12 goes on a mission of peace, but war beckons and the space ship is the prize.