Space Patrol - Season 2 - Eps 9: The Invisible Invasion
While Dart and his crew are orbiting around Uranus, Husky sees a light on the planet which they learn is coming from the headquarters of the Duos, strange beings who inhabit the very heart of Uranus. The Duos, however, are in search of a less unpleasant atmosphere and decide to conquer Earth.
About Space Patrol

Title: Space Patrol
First Air Date: 1963-04-07
Last Air Date: 1964-06-11
Status: Ended
Rating: 6/10 (from 1 votes)
Language: EN
Seasons: 3
Total Episodes: 39
Network: Unknown
Genres: Action & Adventure, Animation, Family, Sci-Fi & Fantasy
Production Companies: Unknown
Synopsis
Space Patrol is a science-fiction television series featuring marionettes that was produced in the United Kingdom in 1962 and broadcast beginning in 1963. It was written and produced by Roberta Leigh in association with the Associated British Corporation.
Cast

Ronnie Stevens
Slim / Husky / Prof. Haggarty (voice)

Dick Vosburgh
Capt. Larry Dart (voice)

Murray Kash
Col. Raeburn (voice)

Libby Morris
Marla (voice)

Ysanne Churchman
Marla / Cassiopeia (voice)