Solaris (1972)

Psychologist Kris Kelvin is sent to a space station orbiting the planet Solaris to investigate strange occurrences among the crew. The station, once bustling with researchers, now has only three inhabitants. Kelvin begins to see visions, including his deceased wife, who reappears as a "visitor" created by Solaris, forcing Kelvin to confront his past while grappling with the strange, supernatural phenomena.