Star Runner Book 4: Journey's End ‪?‬

When Star Runner, along with her Mamoan allies, stopped to trade for supplies with the people of Jellican III, they never expected to end up helping in a planet-wide evacuation. Worse still was the sun exploding much earlier than anticipated, resulting in the combined Mamoan and Jellican space fleets being pulled inside a newly formed black hole. Now the crew of Star Runner has to race against time, not only to find out what happened to all of their new friends, but also to find a way to escape the Bubble once more.