Your first paragraph ...
What exactly is "space fantasy"?
Most of the articles I write in response to reader questions are genre specific, making the genre section of this web site the largest section.
My areas of expertise are:
#1 Horror and all of it's subgenres esp Gorn, Tales of the Macabre (Poe style) and Gothic Romance.
#2 "Dark" (BDSM) Medieval Historical Erotica, esp gay M/M.
#3 Alternate reality speculative/weird/bizarre science fiction
#4 Dark/Gory/Slasher retellings of folklore, nursery rhymes, and fairy tales
On occasion I also write Westerns, WWII War Stories, and Dark Fantasy.
Everything I write tends to have predominately non-human characters, usually alien races of my own invention that are trapped on Earth, along side Fae races (usually Phookas, FarDarrig, and MerFolk) and monster races (Vampires and their kin.)
I do not write happy endings, villains tend to win, good guys usually die at the end, and most everything I write falls under heavy "Dark Gallows" satire focusing on taboo topics. Everything I write, even my children's fiction, walks on the Dark Side. Most of my non-children's books are M-rated for adults 21 and older. About 90% of my books have been banned and most book stores refuse to carry them.
My stories are often short, rarely longer than 35,000 words (7,000 to 13,000 word average). I write nearly as many stage plays as I do short stories. I also write children's books (early readers, why tales, bed time stories, picture books, and quick classroom play scripts.)
I do not write novels (novels are books of 90,000 or more words, most being in the 120,000 to 240,000 word range), so questions specifically regarding novels are going to be answered in reference to my novellas (a novella being a story 25,000 to 90,000 words).
I rarely write articles about any specific genre other than those listed in the link headings above, because the genres above are the genres I write.
Keep these facts in mind when asking advice from me, about your own writing career. I will gladly try to help you out, but my knowledge of writing is limited to what I know and write in my own career.
If you are looking for advice on Westerns, War Fiction (other than WWII), Fantasy, Contemporary Romance, Mystery, Action, Adventure, Suspense, Chick Lit, Romantic Comedy, Humor, HEA, etc I'm probably not the best person to be asking your questions to. You can certainly ask and I will try to answer, but I don't write these genres so they are not my area of expertise.
Recommended Books for Genre Writers:
Below are books I use as reference when writing my own books, articles, and short-stories. A quick heads up, these are not linking to pages where I review each book, here on my website! I have a list of those review pages elsewhere . Each of the books shown below are linked directly to the site/book seller which carries it for sale, so clicking on any of the books below will take you away from my website.