Doppelgänger (1969)
Doppelgänger is a 1969 British science-fiction film directed by Robert Parrish and starring Roy Thinnes, Ian Hendry, Lynn Loring and Patrick Wymark. Outside Europe, it is known as Journey to the Far Side of the Sun, which is now the more popular title. In the film, a joint European-NASA mission to investigate a planet in a position parallel to Earth, behind the Sun, ends in disaster with the death of one of the astronauts (Hendry). His colleague (Thinnes) discovers that the planet is a mirror image of Earth.
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