I love it when people say stuff like, “Oh, it must be nice to write fantasy and sci-fi. You don’t have to do any research.” That’s sarcasm, by the way. Speculative fiction, in order to suspend a reader’s disbelief, requires at least as much research as mainstream or literary fiction. Details have to be consistent, incongruities have to be clearly accounted for, and all in all the stuff you make up has to make sense.
And, frankly, the more fans like something, the more they want your world to make sense – think about how avid fans of Star Trek and Star Wars will study up on ship designs, pseudo-scientific principles, alien races, etc. Any writer of speculative fiction who hopes to have a fan base that devoted someday (and let’s face it, we all wish our works were as beloved and marketable) should have in mind that, if they’re lucky, people will want this kind of consistency and detail from their creation.
It’s funny how you have to leave so much technical detail, background, history, etc. out of the text of your book because to put it in would be to bore the reader half to death with “info dumping”, and yet that same kind of material is exactly what a fan base seeks out once they’re in love with your world and your characters. And they’re disappointed when the world crumbles on inspection, which a writer can say is silly (it’s only fiction, after all!) or can embrace and enjoy that folks care so much about it.
Dig in. Don’t be sloppy with your details. Work things out even if they won’t be said outright in the text. You’ll write your world and your characters better for it, probably save yourself from some messy rewriting to fix inconsistencies, and, if you’re lucky enough to have avid fans someday, you’ll be able to answer their questions with confidence at science fiction conventions.