Science fiction film is a
film genre that uses
science fiction:
speculative, fictional
science-based depictions of phenomena that are not fully accepted by mainstream science, such as
extraterrestrial life forms,
alien worlds,
extrasensory perception and
time travel, along with futuristic elements such as
spacecraft,
robots,
cyborgs,
interstellar space travel or other technologies. Science fiction films have often been used to focus on
political or
social issues, and to explore philosophical issues like the
human condition. 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.