What are some genres that are not considered science fiction?

Well, non-fiction like biographies and history books aren't genres of fiction. They deal with real events and people.

Genres like romance, thriller, mystery, and adventure are often seen as commercial fiction. These genres tend to have broad appeal and sell well in the market.

Some sub-genres of science fiction include cyberpunk, steampunk, and space opera. Cyberpunk often features high-tech and low-life scenarios. Steampunk imagines a world with steam-powered technology. Space opera focuses on grand adventures in outer space.

Well, there's cyberpunk, which often features high-tech and dystopian futures. Then there's steampunk, imagining a world where steam power is dominant in an alternate history.

One of the well - known science fiction genre books is 'Snow Crash' by Neal Stephenson. It combines elements of cyberpunk, with a virtual world called the Metaverse that has its own economy, social hierarchies, and problems. 'Hyperion' by Dan Simmons is also a great one. It tells the story of a group of pilgrims on a journey to the Time Tombs on the planet Hyperion. Each pilgrim has their own story that is interwoven with the overall mystery of the planet and the Shrike, a menacing and powerful entity. 'The War of the Worlds' by H.G. Wells is a classic that depicts an alien invasion on Earth, showing how humanity reacts to a technologically superior foe.

One popular legend genre in science fiction is the space exploration legend. It often involves adventures in far - off galaxies, encounters with alien species, and the discovery of new planets. For example, 'Star Trek' is a well - known series that falls into this category.

Some popular sub - genres in science fiction include space opera, like 'Dune' by Frank Herbert. Cyberpunk is also well - liked, with 'Neuromancer' by William Gibson as a classic. And dystopian science fiction, for example '1984' by George Orwell.

One sub - genre is time - travel science fiction. It plays with the concept of traveling through time, either to the past or the future. 'The Time Machine' by H.G. Wells is a classic example. Bio - punk is another. It focuses on biotechnology and how it can be used, misused, or mutate society. Also, alien - invasion science fiction, which involves extraterrestrial beings coming to Earth, often with hostile intentions as seen in 'War of the Worlds'.

Well, some of the 5 sub - genres are hard sci - fi which is all about real science concepts like in Arthur C. Clarke's works. Then there's dystopian sci - fi where society has gone wrong, like in '1984'. Another could be time - travel sub - genre. It plays with the idea of traveling through time, as seen in 'The Time Machine'. Also, there's alien - invasion sub - genre, dealing with extraterrestrial threats, and the alternate - history sub - genre that imagines different historical outcomes.

Well, there's dystopian science fiction. It shows a future society that is unpleasant, often with totalitarian governments or environmental disasters. Then there's time - travel science fiction where the plot revolves around characters traveling through time. And post - apocalyptic science fiction, which is about the world after a major catastrophe like a nuclear war or a pandemic.