I find it difficult to recommend it, I like it, but I know the limits of my taste, it is dense and very slow, in fact this version lacks fifteen minutes to reach the three hours and really everything starts after 40 minutes.
It is interesting to analyze Soviet space fantasy cinema, most of it is based on books, very good ones, but made with almost no technical means.
Needless to say how influential they were for the directors of the great northern country, by then worried about how to hide the zipper of the monster of the week costume or how to give a twist to the umpteenth Dracula.
And don't talk to me about the political issue: this and other - all - Soviet films were literally banned in the capitalist world until 1990, and even today if you don't do something according to the platforms you don't exist.
That's censorship, that's repression, that's persecution, that's killing a filmmaker. Should cinema be profitable? That is killing.