From Twitter: speculative fiction vs. sci-fi; what's the difference? Does speculative as a genre sell?

Recently, I tweeted that I was looking for blog post ideas. Please continue to send ideas! 

I received a tweet asking what the difference was between speculative fiction and sci-fi. From what I understand, sci-fi would fall under speculative fiction, along with other genres, such as fantasy, horror and dystopian--to name a few. Also, genre crossover is rather common, and a novel could fit into more than one category, especially sci-fi. 

Here are a couple of links with more information regarding sci-fi and speculative fiction.

Speculative fiction actually seems to be doing very well, which is fantastic! I love sci-fi and other speculative fiction because it's an escape from the ordinary; we get to read about cool things like visiting other planets, meeting aliens (hopefully mostly friendly), or traveling in time and space. 

@LisaArnseth thanks so much for your question, and I hope that helps!