Firstly, I’d like to second what Abe said.
Secondly – I find it interesting that so many people regard engineering as science, which it’s not, and psychology and economics not to be science, which they are.
The vagueness of psychology and economics, makes it seem less scientific than engineering, which is hard and solid, but simply adapting rocket propulsion to take us further into space, where we will meet aliens and conflict will arise might have entertainment values, but it’s not very scientific. It’s just exploration into the unknown and fables along these lines have been part of human storytelling since we started making up stories. Today, going to unknown parts of the world is virtually impossible, since we’ve seen it all on TV. Therefore, movie makers have to resort to other tricks:
- Change of times. Where we are in a historical setting, and still exploring, like Indiana Jones.
- Insert McGuffin: Aliens land here, bringing the unknown to us. We clone dinosaurs, bringing back unknown to us.
- We going further away, meeting the unknown.
Most of these fables concern coming of age. Farm boy (sic!) wants to leave (moisture-)farm and have adventures. This will increase his status among his peers, bring fortune and get him laid.
To have that taking place in unfamiliar territory is the very idea behind these fables and placing it “a long time ago…” doesn’t really make it science fiction. Thus it’s most properly called space-opera.
Quite a lot of horror and fantasy and pure suspense has been called science fiction, simply because of the element of laserguns, warpdrives and BEM’s.
My opinion is, even though I enjoy it all, is that it’s not really Science Fiction. Real SF writers have tried for decades to change the label to Speculative Fiction, but to no avail. The thing about speculative fiction is the aforementioned “What if… “ Rather than the classic fables proposition: “If… then…”
And the point about the “What if…” is that by extrapolating things around us today to a future or even an alternative present, we learn something about our self today.
Thus Frankenstein really is SpFi, since it says: What if man, with these new technologies, manages to play God? The exact same question is posed in Jurassic Park, but now it’s not electricity, but DNA-technology.
Both stories are dressed up as fables “If… Then…” to create suspense: If you play God, then innocent people will get killed (although, in Hollywood, monsters are always good at telling good from bad people).
The book Starship Troopers is good science fiction, in that it starts with a “What if…?” Being: What if we demand something from the public, in return for the franchise to vote? You might not agree with Heinlein’s conclusions, but the prospect is interesting.
Invasion of the Bodysnatchers could, on the surface, be seen as a “What if aliens land on our doorstep?” In reality, it’s most certainly a fable about The Red Threat – “If we let the aliens (communists) land, then we will be mind controlled zombies.”
Oh, and BTW: Stark Trek is just a Soap in Space.