Types of science fiction

Science fiction is a mixture of hard and soft science fiction.

• Hard science fiction strictly follows natural scientific facts and principles like physics, astronomy, chemistry, etc. For example, Gravity, the story of an astronaut whose spacecraft is damaged while she repairs a satellite, was known for its scientific accuracy.
• Soft science fiction is focused on social sciences, like anthropology, sociology, psychology, etc. For example, the film Wall-E is science fiction about the end of life on Earth due to man's disregard for nature.