"Endeavor" by Robert R. Chase

A stardard tale about an exploration ship that barely escapes when the star Betelgeuse becomes a nova, in the process rescuing a group of altered humans, Genenhu, who the crew think was involved in a war in the past. Their problems mount as the life support is unable to handle so many people and they have to get raw materials from a planet just barely ahead of the nova shock-wave. But their possible savior may come from a badly injured man who wants to bridge the differences between them.

• Read from Analog SF, July-August 2005 issue