Science fiction - a narrative which draws imaginatively on scientific knowledge, theory, speculation, and the effects of future events on human beings in its plot, theme, and setting. It considers these events rationally in terms of explanation and consequences and is concerned with the impact of change on people. This is a form of fantasy which hypothesizes by logical extrapolation about the possibilities of space travel, adventures on other planets, etc. Recently, it has become a form of literature that takes place in an alternative present, a preconceived past, or an extrapolated future with these alterations based upon technological or sociological changes in the present.
Science is from Middle English through Middle French into which it was derived from scient , meaning “having...
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