I watched the Icelandic series Katla, and notice it has a similar theme to Solaris. Material from a meteorite seems to have the capability to sense who people are longing for, and make them come into life as flesh-and-blood beings.
Tarkovsky’s Solaris was one of my favorite movies in my late teens and early twenties. In this case, an ocean planet is able to sense what’s unresolved in the scientists on a space station, and manifests people they have something unresolved with.
The movie beautifully and clearly shows two general ways we can relate to what’s unresolved in us. In Solaris, most struggle with it and go deeper into trauma. And the main character takes the opportunity to interact with the person manifested from his life, and find resolution.
And that’s how it is for all of us. Life brings up whatever is unresolved in us, and we can either struggle with it and maintain or reinforce the issue or trauma, or we can take the opportunity to get to know it, befriend it, and find resolution. To find resolution, we often need to go through some struggle, we need to heal our relationship with what’s coming up, and that allows the issue itself to find healing.
I should mention that Solaris is based on the book by Stanislaw Lem by the same name. And Katla is more of a regular fantasy story which does reflect dynamics in ourselves, but it lacks the beautiful clarity of Solaris.