Solaris (, tr. Solyaris) is a 1972 Soviet science fiction drama film based on Stanisław Lem's 1961 novel of the same title. The film was co-written and directed by Andrei Tarkovsky, and stars Donatas Banionis and Natalya Bondarchuk. The electronic music score was performed by Eduard Artemyev and features a composition by J.S. Bach as its main theme. The plot centers on a space station orbiting the fictional planet Solaris, where a scientific mission has stalled because the skeleton crew of three scientists have fallen into emotional crises. Psychologist Kris Kelvin (Banionis) travels to the station to evaluate the situation, only to encounter the same mysterious phenomena as the others.
Solaris won the Grand Prix Spécial du Jury at the 1972 Cannes Film Festival and was nominated for the Palme d'Or. It received critical acclaim, and is often cited as one of the greatest science fiction films in the history of cinema. The film was Tarkovsky's attempt to bring greater emotional depth to science fiction films; he viewed most Western works in the genre, including 2001: A Space Odyssey (1968), as shallow due to their focus on technological invention. Some of the ideas Tarkovsky expresses in this film are further developed in his film Stalker (1979).
Plot
Psychologist Kris Kelvin is being sent on an interstellar journey to evaluate whether a decades-old space station, positioned over the oceanic planet Solaris, should continue to study it. He spends his last day on Earth with his elderly father and retired pilot Burton. Years earlier, Burton had been part of an exploratory team at Solaris but was recalled when he described strange happenings, including seeing a four-meter-tall child on the surface of the water on the planet. These were dismissed as hallucinations by a panel of scientists and military, but now that the remaining crew members are making similarly strange reports, Kris' skills are needed.
Upon his arrival at Solaris Station, a scientific research station, none of the three remaining scientists greet Kelvin, and he finds the space station in strange disarray. He soon learns that his friend among the scientists, Dr. Gibarian, has killed himself. The two surviving crewmen—Snaut and Sartorius—are erratic. Kelvin also catches fleeting glimpses of others aboard the station who were not part of the original crew. He also finds that Gibarian left him a rambling, cryptic farewell video message, warning him about the strange things happening at the station. The video also shows two appearances of a little girl who should not be aboard the station, with Gibarian asking Kelvin if he has seen her and insisting he is not insane, and should strange things happen to Kelvin, it will not be Kelvin having gone insane.
After a fitful sleep, Kelvin is shocked to find Hari, his wife who died ten years earlier, sitting in his sleeping quarters. She is unaware of how she got there. Terrified by her presence, Kelvin launches the replica of his wife into outer space. Snaut explains that the "visitors" or "guests" began appearing after the scientists conducted radiation experiments, directing X-rays at the swirling surface of the planet in a desperate attempt to understand its nature.
That evening, Hari reappears in Kelvin's quarters. This time, he calmly accepts her and they fall asleep together in an embrace. Hari panics when Kelvin briefly leaves her alone in the room, and injures herself attempting to escape. But before Kelvin can give first aid, her injuries spontaneously heal before his eyes. Sartorius and Snaut explain to Kelvin that Solaris created Hari from his memories of her. The Hari present among them, though not human, thinks and feels as though she were. Sartorius theorizes that the visitors, also called "guests", are composed of "neutrino systems" rather than atoms, but that it might still be possible to destroy them through use of a device known as "the annihilator". Later, Snaut proposes beaming Kelvin's brainwave patterns at Solaris in hopes that it will understand them and stop the disturbing apparitions.
In time, Hari becomes more human and independent and is able to exist away from Kelvin's presence without panic. She learns from Sartorius that the original Hari had committed suicide ten years earlier. Sartorius, Snaut, Kelvin and Hari gather together for a birthday party, which evolves into a philosophical argument, during which Sartorius reminds Hari that she is not real. Distressed, Hari kills herself again by drinking liquid oxygen, only to painfully resurrect after a few minutes. On the surface of Solaris, the ocean begins to swirl faster into a funnel.