A psychologist is sent to a space station orbiting a planet called Solaris to investigate the death of a doctor and the mental problems of cosmonauts on the station. He soon discovers that the water on the planet is a type of brain which brings out repressed memories and obsessions.
- Genre: Drama, Science Fiction, Mystery
- Studio: Mosfilm, Creative Unit of Writers & Cinema Workers, Unit Four
- Keyword: based on novel or book, 1970s, loss of sense of reality, extraterrestrial technology, soviet union, subconsciousness, hallucination, space travel, astronaut
- Cast: Donatas Banionis, Natalya Bondarchuk, Jüri Järvet, Anatoliy Solonitsyn, Nikolay Grinko, Vladislav Dvorzhetsky