Strictly speaking, every science fiction tale presents its own version of future and therefore there are as many science fiction universes as there are science fiction stories. Many SF tales follow dictates of a particular subgenre like Cyberpunk or Space Opera of which, see the separate entry.
... the next five years, design work continued, aided by data from the British Aerospace EAP prototype which had first flown in 1986, and culminating in the first ...