Mister Unsichtbar

I remember seeing Mr Superinvisible at the old ABC in Cheltenham in Spring/Summer 1975, near Royal Well Bus Station (which sadly closed in the early 1980's). It was partnered with another sci-fi film with space rockets and a fiery red planet - one of the rockets crashed on the planet's surface and was swallowed up. Sadly, I cannot remember the second film's title - does anyone else remember this film? Approaching eight years old, I enjoyed watching Mr Superinvisible, as well as the other film, but it probably does not stand the test of time nowadays. Don't know if I want to see it again - but I'd certainly like to see the other film again, if only I could remember the title.