Astronauts was a British sitcom that aired on the ITV network in 1981. It was written by Graeme Garden and Bill Oddie, two of The Goodies. There were 13 episodes over two series.
I liked The Goodies and I liked sci-fi but I quite vividly remember not liking this. Of course it was all a long time ago and I was relatively young so maybe it stands up better than I remember. I might just have been annoyed because it didn't star The Goodies themselves.