Editing Science fiction film (section)

===Time travel===
{{main|Time travel in fiction}}

The concept of [[time travel]]—travelling backwards and forwards through time—has always been a popular staple of science fiction film and science fiction television series. Time travel usually involves the use of some type of advanced technology, such as H. G. Wells' classic ''[[The Time Machine]]'', the commercially successful 1980s-era ''[[Back to the Future (franchise)|Back to the Future]]'' trilogy, the ''[[Bill & Ted]]'' trilogy, the ''[[Terminator (franchise)|Terminator]]'' series, ''[[Déjà Vu (2006 film)|Déjà Vu]]'' (2006), ''[[Source Code]]'' (2011), ''[[Edge of Tomorrow (film)|Edge of Tomorrow]]'' (2014), and ''[[Predestination (film)|Predestination]]'' (2014). Other movies, such as the ''[[Planet of the Apes (1968 film)|Planet of the Apes]]'' series, ''[[Timeline (2003 film)|Timeline]]'' (2003) and ''[[The Last Mimzy]]'' (2007), explained their depictions of time travel by drawing on physics concepts such as the [[special relativity]] phenomenon of time dilation (which could occur if a spaceship was travelling near the speed of light) and [[wormhole]]s. Some films show time travel not being attained from advanced technology, but rather from an inner source or personal power, such as the 2000s-era films ''[[Donnie Darko]]'', ''[[Mr. Nobody (film)|Mr. Nobody]]'', ''[[The Butterfly Effect (film)|The Butterfly Effect]]'', and ''[[X-Men: Days of Future Past]]''.

More conventional time travel movies use technology to bring the past to life in the present, or in a present that lies in our future. The film ''[[Iceman (1984 film)|Iceman]]'' (1984) told the story of the reanimation of a frozen [[Neanderthal]]. The film ''[[Freejack]]'' (1992) shows time travel used to pull victims of horrible deaths forward in time a split-second before their demise, and then use their bodies for spare parts.

A common theme in time travel film is the paradoxical nature of travelling through time. In the [[French New Wave]] film ''[[La jetée]]'' (1962), director [[Chris Marker]] depicts the self-fulfilling aspect of a person being able to see their future by showing a child who witnesses the death of his future self. ''La Jetée'' was the inspiration for ''[[12 Monkeys (film)|12 Monkeys]]'', (1995) director [[Terry Gilliam]]'s film about time travel, memory and madness. The ''[[Back to the Future (franchise)|Back to the Future]]'' trilogy and ''[[The Time Machine (2002 film)|The Time Machine]]'' go one step further and explore the result of altering the past, while in ''[[Star Trek: First Contact]]'' (1996) and ''[[Star Trek (2009 film)|Star Trek]]'' (2009) the crew must rescue the Earth from having its past altered by time-travelling [[cyborg]]s and alien races.