Science Fiction

What is science fiction: is a genre of fiction dealing with the impact of imagined ideas which revolves around science and/or technology, often in a futuristic setting. Its writing is a lot like fantasy, but it has more science so it seems like that in the future, the things in the book or movie might occur.

Where did the science fiction genre come from
It came from the scientists trying to explain things about the universe. It was first created in the scientific revelation when Newton and some other scientists were trying to explain some stuff about astronomy and mathematics.
What did it grow from
Science fiction came from a futuristic story, and formed into a genre with many different ‘sub-genres’ some which fall into stories about aliens.
Consider the role of other genres which had a direct or indirect influence on the development of science fiction
the role of other genres would have affected the way this one was created, since the first writer wanted to make something different than the other, more original genres.

Categories

With science fiction there are other sub genres that fall under the science fiction. This  Hard Sci Fi, Soft and Social Sci Fi, Cyberpunk, Time Travel, Alternate History, Military SF, Superhuman, Apocalyptic, Space Opera, Space Western, Feminist Science Fiction, New Wave, Steam Punk, Comic Science Fiction, Anthropological Science Fiction and Bio-punk.

Hard sci fi is when someone writes about the future in a way that it could be possible that in the future, it could happen such as flying cars.

Soft sci fi is more focused on the character and emotion.

Time travel stories say it all. You know like back to the future and stuff like that.

Military Stories are stories that could contain things about wars and training such as Enders game

Superhuman stories deal with the emergence of humans who have abilities beyond the normal

Apocalyptic fiction is concerned with the end of civilization through war, pandemic, astronomic impact, and ecological disaster

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

Space Western is a sub-genre of space opera that transposes themes of the American Western books and film to a backdrop of futuristic space frontiers

Feminist science fiction poses questions about social issues such as how society constructs gender roles, the role reproduction plays in defining gender and the unequal political and personal power of men and women. 

New Wave is a term applied to science fiction writing characterised by a high degree of experimentation both in form and in content, and a highbrow and self-consciously "literary" or artistic sensibility.

Steam punk is based on the idea of futuristic technology existing in the past usually the 19th century and often set in Victorian era England

Conventions

Science fiction conventions are held worldwide and have many different types of people who come in dressed up in their favourite fictional characters and other well-known or unknown characters. They have interviews with famous actors and authors.

Chattacon is organised by the non-profit Chattanooga Speculative Fiction Fans Incorporation. First held in 1976, the convention drew more than 1,000 attendees to the Chattanooga Choo Choo Hotel in 2010. There is also Capcom which is also well known convention.

Itzacon is a one or two-day science fiction convention held occasionally in the Dallas, Texas area mostly on Thanksgiving weekend. The organizers described Itzacon as "An occasional event meant to serve as a party, a mini-con, a chance to hang out and just have fun.