How are American science fiction films made?

Actors perform in front of a green background (called key-like technique). There is only an actor's image on the screen, and there is no background. The background is shot or produced separately, and the post-production is completed together.

Science fiction movies take science fiction elements as the theme and fantasy scenes based on science as the background, and on this basis, narrative film and television works are launched.

The scientific theories used in science fiction films are not necessarily accepted by the mainstream scientific community, such as alien life, alien planets, superpowers or time travel. Science fiction movies are often set in the possible future world, showing the difference between reality and spaceships, robots or other elements beyond the times.

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Introduction of famous American science fiction movies

Gravity is directed by Alfonso Cuarón, starring sandra bullock and George Clooney.

The script was written by director Alfonso Cuarón and his son Jonás Cuarón, and the film won seven awards at the 86th Oscar on March 3rd, 20th14th, including best director, best editing, best cinematography, best visual effect, best sound effect, best sound editing and best soundtrack.

The film tells the story of a serious accident in space after two male astronauts and a female astronaut on the space shuttle Explorer went out to repair the Hubble telescope and were attacked by space debris.

2. Star Wars, also known as Star Wars: Episode IV-A New Hope, is the fourth episode of the sci-fi movie Star Wars series and the first episode of the true story series.

The film, directed by george lucas and starring Harrison Ford, mark hamill and kelly fisher, was released on May 25th. 1977. This film tells the story of luke skywalker's adventures as a Jedi.