Hard Science Fiction Short Stories

Hard science fiction is a category of science fiction that emphasizes technical detail as well as scientific accuracy. The term is also used to refer to science fiction short stories that focus on the scientific elements of the story - as opposed to focusing on the characters or something else non-science related (soft science fiction.) If you think of the term "hard sciences" (which describes measurable scientific fields such as mathematics, physics, chemistry and so on) then you'll be on the right track!