"Solaris" is a 1972 science fiction film directed by the Russian filmmaker Andrei Tarkovsky. It is based on the novel of the same name by Polish author Stanisław Lem.

The film is set in the future and revolves around the story of a psychologist named Kris Kelvin who is sent to a space station orbiting the planet Solaris to investigate strange and unexplained events occurring there. Upon his arrival, Kris is faced with a series of strange and unsettling phenomena, including vivid hallucinations and the reappearance of his wife, who has been dead for many years.

"Solaris" is known for its meditative pace, haunting visual style, and philosophical themes. The film explores complex ideas about memory, loss, and the nature of reality, as well as the relationship between humans and the universe.

Andrei Tarkovsky's approach to science fiction is unique, as he uses the genre as a means of exploring deeper human themes and emotions. "Solaris" is considered a masterpiece of science fiction and is widely regarded as one of Tarkovsky's greatest films.