Sci-fi Genre

Origins-

The sci-fi genre was started from as early as the 2nd Century with the novel True Story which was all about aliens, the outer space and time travel. Over the centuries there have been many sub genres such as Time Travel and Horror sci-fi. With new technologies such as electricity and the telegraph introduced new forms of sci-fi transportation. In the 1980s the Star Wars franchise helped spark a new type of sci-fi but there were other very popular sci-fi movies and TV show including Star Trek.

Categories-

• Hard Sci-fi- This genre is all about the accurate detail to physics, chemistry and astrophysics. The genre is more on the focus of the science part of sci-fi rather than a main character or destruction of the world.
• Soft Sci-fi- This genre of sci-fi is all about a main character and a storyline mostly revolving around the main character and what he/she does throughout the book or movie.
• Time Travel- This genre is all about machines that are able to send a person through time. One of the most famous novels "The Time Machine" in 1985 is one example of a Time Travel genre novel.
• Military Sci-fi- This genre is about national or interstellar armed forces wars usually involving soldiers. Military sci-fi has many parts of other genres such as Horror Sci-fi and Soft Sci-fi
• Superhuman- This genre is all about humans who have powers more powerful than the average human being. They usually include a main character through a story. A good example of Superhuman Sci-fi genre would be many of the 'Superman' movies that have been created over the years.
• Space Opera is adventure science fiction set in outer space or on distant planets, where the emphasis is on action rather than either science or characterization. The conflict is heroic, and typically on a large scale.

Conventions- Parts of certain genres in other genres of sci-fi as well. Such as there all in the future or there is new technology. 

The conventions of sci-fi are generally that they include things such as aliens or outer space creatures that try and destroy Earth. There are usually armies who fight against each other. Other conventions include having the speed of light planes or spaceships.

Many of the sci-fi genres can have romanticist couples in them who fall in love over the course of the novel or movie.