This film was considered for some strange reason as not really successful (may be it was politically incorrect for its time) and almost not shown and theatres and TV. I saw it only once in 1990 during "Old Sci-Fi festival" but I have to say it's best Russian I saw. Actually in USSR there were almost didn't filmed sci-fi an thrillers. This film in somewhat very similar to Kubrik's Space Odyssey. Probably it well-made, decorations, dress-ups , scenes build strong (as if for real use) and not from plastic and paper. Also people shown at this movie, their interests, behavior and motivations so different from modern's. All this give you a strong filling of future life. This is true, good old-fashioned Sci-fi. Not Hi-tech westerns like Terminator or hi-tech tales like Star Wars. Also it based on very serious story, considered as one of the keystones of Russian postwar sci-fi. Shortly speaking - Good, old-fashioned, space travel pure sci-fi.