In 'the enceladus mission hard science fiction', the setting is an important element. Enceladus, with its icy exterior and mysterious subsurface ocean, provides a unique and fascinating backdrop. The mission itself, whether it's a manned or unmanned mission, would shape the story. A manned mission would bring in elements of human endurance and the psychological effects of long - term space travel. The scientific research goals, like analyzing the composition of the ocean water or studying the moon's geology, are also key. These elements would all be based on real - world scientific knowledge, which is characteristic of hard science fiction.