Saw this again after a VERY long time
SPOILERS
I remember seeing this as a child - if I remember rightly, on BBC2 immediately after children's programmes had finished on BBC1. Though, that doesn't seem like a particularly appropriate time to show such a film... Anyway, while I didn't remember it in much detail, the hauntingly bleak ending had always stayed with me. So, when I noticed it was on Film4 the other day, I set the recorder and it was interesting to watch it as an adult... People talk about it so reverentially and there's certainly something special about it. But, it's not without flaws... The thing that surprised me most was the fact that they thought Saturn's rings were made of gas... Presumably they didn't discover they were in fact ice and rock 'til the Voyager missions... Unfair to consider that a flaw, I suppose - if people didn't know, they didn't know... The special effects are very of their time, but are good enough and even, on occasions, quite striking - great domes of Earth plantlife off in space... It would have been good to know a bit more about what was going on back on Earth... Why were there no longer any plants left on Earth and what had led to the decision to destroy the precious remnants that were floating out in space..? My biggest problem with it was the fact that, while it has this less than subtle environmental message, Lowell - the champion of plants and animals in the film - really isn't a very sympathetic character... Even as someone who's very concerned about the environment myself, I look at him and see an unstable man, who shouldn't have been allowed anywhere near a space mission and not an eco-hero... Are three human lives less important than a dome full of plantlife - even if it is the last Earth plantlife in existence..? It's not a decision I'd be remotely comfortable making... So, no - it's not perfect. But, as I've said, it is a special film and a film that can haunt your thoughts for thirty-odd years must have a lot going for it.