Antares Dawn by Michael McCollum
Series: Antares, Book 1.
Approx. 92,410 words.
Published on April 5, 2010.
The super giant star Antares exploded in 2512, isolating the human colony on Alta from the rest of human space for more than a century. One day, a powerful warship materialized in the system without warning. Alarmed, the Altan Space Navy dispatched a ship to investigate. What ASNS Discovery finds is a battered hulk manned by a dead crew.