I rewatched this series a few years ago and was surprised that it held up as well as it did. Yes, lots of sexism, but not untypical for that time. Like Star Trek, it had women in authority roles, but also in sexy outfits, so a bit of a mixed bag. They also got handsome Michael Billington out of his shirt a few times, which I found quite interesting for reasons that didn't become clear to me until some years later :)

Space:1999 started as a sequel to this series, set ten years later, on a greatly expanded Moonbase. They eventually abandoned that connection.

The opening credits theme music and editing are just brilliant.