Categories of Science Fiction
First, there are two main types of Science Fiction:
- Hard Sci-Fi
- When technology is the main focus.
- Soft Sci-Fi
- How technology affects the characters and the world around them.
Then you have some Sub-Genres:
- The Creation Story
- When new things/people/creatures/places are made or explored
- The Fantastic Voyage
- It's those brave, scientist-type explorers who go to where humans don't normally live
- Domestic Science Fiction
- This is those new encounters- with new tech, other life forms, etc.
- Space Opera
- Sci-Fi equivalent to historical epics
- Stories featuring vast distances involving many worlds and planets.
- Cyberpunk
- This is your dystopian world, whether they are high-tech or trashpiles.
- Steampunk
- Not to be confused with cyberpunk, but is usually set in a historical period (like the Victorian era) but with many technological advancements
- Post-Apocalyptic
- The world was already destroyed by an apocalypse, and now your characters are living in it
- Cosmic Horror
- As it sounds, it's your classic sci-fi definition, but with all the scary things happening to everyone
Information gathered from NBC News and The Collector.