Science fiction

Science fiction film is a film genre that uses speculative, science-based depictions of imaginary phenomena such as extra-terrestrial lifeforms, alien worlds, and time travel, often along with technological elements such as futuristic spacecraft, robot, or other technologies. Science fiction films have often been used to provide social commentary on political or social issues, and to explore philosophical issues, such as "what makes us human." In many cases, tropes derived from written science fiction may be used by filmmakers ignorant of or at best indifferent to the standards of scientific plausibility and plot logic to which written science fiction is traditionally held. The genre has existed since the early years of silent cinema, when Georges Melies' A Trip to the Moon (1902) amazed audiences with its trick photography effects. The next major example in the genre was the 1927 film Metropolis. From the 1930s to the 1950s, the genre consisted mainly of low-budget B-movies. After... full article at wikipedia