watch it online via youtube:
Moria says it
has a reasonable reputation in science-fiction circles. In reality though, it is better off viewed as an historical curiosity rather than one that necessarily makes for good dramatic science-fiction.DVD Talk says, "Ikarie XB 1 is one of the best outer space movies ever, and surely the most serious made before Kubrick's film." FilmJournal.net calls it "an unusually thoughtful and intelligent genre entry".
It's on this list of Best Obscure Science Fiction Films.