20th century in science fiction

Science fiction is a type of writing that imagines things that could happen but haven't happened yet. In the 20th century, science fiction stories and books started to become popular. Authors wrote stories about robots, time travel, aliens, and space exploration and it let people explore new worlds and new ideas in their mind. It also gave people new ways to think about how the world worked and how technology could change it. Science fiction in the 20th century made people excited about the future and explained how things worked in a way that was easy to understand.