Rereading the thread I realise a lot of people here set science fiction = space flight and planets... 
Just like space opera is considered a subgenre of sci-fi, so is, say, alternate history...
There are lots of good stories out there speculating about what would have happened if historical events had had different outcomes (the spanish armada defeats Francis Drake for example)... They need not be set in space (or even in the future!) to be considered sci-fi IMHO...
Carolus

Just like space opera is considered a subgenre of sci-fi, so is, say, alternate history...
There are lots of good stories out there speculating about what would have happened if historical events had had different outcomes (the spanish armada defeats Francis Drake for example)... They need not be set in space (or even in the future!) to be considered sci-fi IMHO...
Carolus
Comment