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.
... Brent was the keyboardist until his death in 1990. Without missing a show, Vince Welnick[?] joined as the keyboardist and stayed with the band until 1995. Bruce ...