Janet, who had started coming to terms with his prognosis, is unsettled because surgery means the risk of death on the table; in an effort to regain her composure, she goes to a planetarium and stays for a presentation, which prompts many realizations, among them that what was once fact can be supplanted by new information, new facts. That evening at the hospital, she quizzes her father on the moons of Jupiter and the mythical origins of the name of the moon Ganymede, knowing that these might be the last words she will ever hear him utter. The story ends with her reflecting on the moments after the planetarium show earlier that day, in which she came to some acceptance of her older daughter's and father's respective decisions and then returned to the hospital.