Ostensibly, this is about four men who visit a dying star for the purposes of scientific study when it goes horribly wrong and they get stuck there, cut off from the rest of humanity with no realistic hope of getting back alive. Then it follows their desperate and seemingly futile efforts to repair their ship, a race against time before their food and sanity run out.
Really though, this is about how each man comes to terms with himself and his place in the universe. It asks what is the point of space exploration, of scientific endeavour?
At around 140 pages, it is quite a short novel. Perhaps it might have been slightly more effective in engaging the reader with the characters had the author had more space to develop them?